When rear cylinder deactivation is functioning, an icon will illuminate at the right of the Ride Command display screen. 19/01/2021 9:24 am. Home. The technology is mostly used in cars with 6-cylinder and 8-cylinder engines such as the Mercedes-AMG E63 S and Jeep Grand Cherokee SRT, but its also in use in Fords new It could be that G series engines in Romania no longer have cylinder de-activation and this is why it was removed from the configurator. You can check in the Mazda Connect if your car has cylinder de-activation or not by going to Information>Fuel Efficiency Monitor. See the abstract from the manual below: Some people complained about strong vibrations from the CD system. New posts Search forums. Chebbyfan. It's a recent thread and has some additional discussion about deactivating MDS. The Gen IV engine has a firing order of 1-8-7-2-6-5-4-3. 06-15-2009, 03:04 PM What an Active Fuel Management system does is actually turn off half of the engines cylinders when the engine is under taxed and the extra power is not needed - highway cruising only. #2.
Reputation: 25616. Cylinder deactivation has always amused me That way when the ECU turned off one, two or three V2s, the pistons were not being dragged up and down the cylinders, there were no moving parts at all. Mazda CX-5 cylinder deactivation trouble. If cylinder deactivation is automatically turned off while trailering then the tester would be a simple way to deactivate. I've heard others express doubts about this technology being a good idea for the long haul. Can I Turn The System Off? I think it all depends on the EU and Diamond817. Cyclinder deactivation tech has been around for over a decade on Honda Odyssey. Engines contain pistons that move up and down in their cylinders, powered by the force of a gas-air mixture as it combusts, to turn a central Can cylinder deactivation be turned off? New posts New resources Latest activity. Search: Mazda 3 Engine Torque Specs. Search: Xc90 Steering Angle Sensor Reset. Thread starter tweak48; Start date Aug 18, 2015; 1; 2; Next. 2020 I know you can turn off cylinder deactivation on the C7 Corvettes. When cylinder deactivation is commanded ON, the exhaust valve for the deactivated cylinder is in the closed position, allowing the locking pins on the valve lifter to I put magnaflow mufflers on my car and now you can tell when the cylinder deactivation kicks on. Genuine Volvo Part # 31313083 (31264469) - Contact reel He said that it would be safe to keep driving it, but that the steering would "feel funny" because one wheel pulls against the other one The #1 Online Source for Genuine, OE, & OEM European Replacement Car Parts since 1986 How serious is the power steering light? I recently came across a product video that also had an interesting bit of information in it. They just replaced some brackets in the radiator. While one arm still follows the camshaft, the unlocked arm It seems that Mazda is replacing the heads of 2.5 Skyactiv-G engines although as ASH8 says, this is not related to the TSB above or a Software Available on the 2018 Mazda CX-5 and 2018 Mazda6, Mazda is the only automaker to offer cylinder-deactivation technology on a four-cylinder engine in North America. The challenge with four-cylinder deactivation is that an engine running on two cylinders is more likely to cause vibration. (That's a joke. Don't do that.) Cylinder deactivation is a technology used for fuel economy, removing one or more cylinders from the equation under light load in order to improve vehicle efficiency. But if it goes wrong, some gnarly things can happen, which is the reason for Mazda's latest recall. You can expect to get a 10-15% improvement in fuel economy with this feature. Cylinder deactivation is just one of a number of ways car makers are reducing the impact on the environment and your back pocket. Search: Mazda 323 Obd2 Port. Anyone that has turned over an engine with a spanner on the crankshaft bolt will know how much friction will be saved by this design. The ECO light comes on when your van is running in the most fuel efficient way under the driving conditions at the time. But you also have to remember this pilot has 800 miles on it so the engine isn't even broken in yet. im4snow2000. New posts New resources Latest Search: Toyota Keyless Ignition Problems. Check it out here: Turn off MDS (cylinder deactivation) Let me know if you guys have any other features that you found in the comments below.
Fullsize Truck & SUV - 2014-2019 K2XX Platform. In sport and tow Instead, you will most likely need to go back To initiate cylinder deactivation, it?ll require a few variables; including the current gear engaged, the torque produced by the engine, the vehicle speed, and the engine speed. Once these parameters are determined, the engine is made ready for deactivation. Next Last. We went to a dealer on Sunday, and should be I know you can turn off cylinder deactivation on the C7 Corvettes. Available on the 2018 Mazda CX-5 and 2018 Mazda6, Mazda is the only The cylinders are deactivated by means of a double-stroke lifter which is FAR more prone to failure than a But the root problem is still there on Mazdas cylinder deactivation system, the rocker arm can be fallen if When a cylinder is deactivated, solenoid controlled oil pressure releases a locking pin between the two rocker arms. This driving is probably 60% hwy. The VCM kicks in when the engine can run efficiently The key is regular oil changes. Fullsize Truck & SUV - 2014-2019 K2XX Platform. The company is supposedly developing one for push button starts. You will have to press it every time you get in the car. I put magnaflow mufflers on my car and now you can tell when the cylinder deactivation kicks on. How It Works: Fuel injection. The efficient engine also offers 184 At first they said that they would do an update, then they decided not to do it.
Cylinder deactivation takes multiple engine cylinders out of play at low loads (by closing the valves and turning the injectors off). Read More.
Problems that can be directly connected to cylinder shut off? Cylinder Deactivation (Active Fuel Management) System Description. Mazda is one of the first to deactivate two cylinders on a four cylinder engine. Want to know what cylinder deactivation is and how to know if your Mazda is deactivating cylinders?
During this process, the deactivated cylinder heads still move up and It's been known to cause problems but I haven't had any issues. The only way I can think of is you need to press the gear limit on the steering wheel to show 8 under your gear indicator, that should stop the MDS from 06-15-2009, 03:04 PM What an Active Fuel Management system does Didnt really solve
The good thing about it is, it genuinely seems to improve fuel economy (5.5 L/100km), however, the calibration could be Reason for Mazda Rx-8 P2004 and find the solution for the code Mazda Rx-8 P2004 , we'll give to how to fix Mazda Rx-8 P2004 trouble code problem In mint condition Mazda Cx-3 P2423 OBD-II Diagnostic Powertrain (P) Trouble Code Information Page The new Mazda 3 is a brilliant car and among the most desirable family hatchbacks you can buy Nissan Sunny However, you may require performing a few simple crucial steps to disable it in 1 of 2 Go to page. Cylinder deactivation has always amused me That way when the ECU turned off one, two or three V2s, the pistons were not being dragged up and down the cylinders, there The details are out on the 2018 Mazda CX-5 and the fun to drive SUV just got better with more fuel economy and standard safety features throughout all trim levels. Cylinder deactivation controls can be found in the Vehicle Settings menu. However, issues with CD have become so prevalent that many people take their vehicle to a trusted mechanic to have their CD system When an engine fitted with cylinder 0. Hy, my G150 M3 manual has cylinder deactivation. Mod_Man [BANNED] (@mod_man) Illustrious You can quickly and easily cycle the MDS (cylinder deactivation) on and off. What's new. 2014-2018 Silverado & I got ~28 - 30mpg on the freeway, which I'm pretty happy with, but there's several places in the cluster screens where's there a V8 icon, but it doesn't change to anything. Aug 18, 2015 #1 tweak48 Answer (1 of 3): The cylinder deactivation feature doesnt CAUSE lifter failure. r/airsoft Read Online Mazda F2 Engine Torque Specs How to align valve timing on 2010- 2013 Mazda 3 / Ford 2 NGK-1/2-2/3 turn on plugs with a gasket NGK-1/2-2/3 turn on plugs with a gasket. Full-size Mercedes-Benz models sold in Europe in 1999 had something new: an Active Cylinder Control system that deactivated half Yet they claim that in two cyllander mode, most engines will have problems after running for 25-50 hrs straight, but they tested their skyactive-g on two piston mode for a couple of days straight and had zero issues. 2014-2018 Silverado & Sierra Mods. Mazda E. There are two ways to disable or delete Active Fuel Management on your GM or Chevy Gen IV LS or LS-based Vortec engineone is to install an AFM Disabler, and the second Mazda's New Technology Makes SKYACTIV-G Even Better - Inside Chebbyfan. If cylinder number 1 is on its combustion event when cylinder deactivation is commanded ON, the next cylinder in the firing order 2014 - 2019 Silverado & Sierra. im4snow2000. You can quickly and easily cycle the MDS (cylinder deactivation) on and off. Go. How about on the Forums. It reduces the pumping losses of the engine under low power requirements by deactivating 4 of the 8 cylinders. The new 2018 Mazda6 offers drivers an EPA-estimated 26 city and 35 highway miles per gallon with the new SKYACTIV-G 2.5 engine. if its a six cylinder it is 14ft Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure Engine additives Each trim level comes equipped with this engine to give you a thrilling experience on the road Mazda3 GX Mazda3 GS Mazda3 GT Includes: Adds: Adds: 2 Mazda3 GX Mazda3 GS Mazda3 GT Includes: Adds: Adds: 2. Cylinder deactivation is timed so that the cylinder is on an intake event. This article originally appeared on Dec 17, 2020. During an intake event, the intake cam lobe is pushing the valve lifter upwards to open the intake valve What's new. ranier said: went to mazda. There was a thread here right after it was announced. Problems with cyilnder deactivation Mazda: Mazda started widespread use of its own version in 2017 with the Texas1836. Can you manually turn off cylinder deactivation?? Diamond817. From the factory, no. Of course there was plenty of wailing and Sep 2, 2020. New posts Search forums. Unfortunately, if you decided to go with cylinder deactivation, you can't simply turn it off. An official list of fuel economy numbers hasn't
Valves at the top of the cylinder open and shut in a specific pattern to precisely allow fuel and exhaust gasses in and out of the cylinder. Edit: seems impossible to turn it off in the manual transmission. Pull up the thread titled MDS haters. Honda also implements this in the Accord Hybrid. May 20, 2016. eagle2 said: I see that the new Ridgeline is going to have "cylinder deactivation management" in an effort to have better EPA numbers. The biggest change coming to the 2018 Mazda CX-5 is cylinder deactivation technology that comes standard on all models. There should be a button on the dash you can push to shut it off. Here's a picture of the sensor in The 2014 - 2019 Silverado & Sierra. I think the idea of cylinder deactivation being this horrible thing is overblown and outdated. With cylinder deactivation, the engine automatically turns off a few of the cylinders to save on fuel. For FTR 1200 models equipped with Ride Command, rear cylinder deactivation can be turned on and off by accessing the settings menu. Available on the 2018 Mazda CX-5 and 2018 Mazda6, Mazda is the only automaker to offer cylinder-deactivation technology on a four-cylinder engine in North America. I recently came across a product video that also had an interesting bit of information in it. then you sit inside, hold the brake and press the start button A New York Times report tells the story of a couple who died of carbon-monoxide poisoning after their 2017 Toyota Avalon, equipped with a push-button keyless ignition, was mistakenly left running The module will manage the remote starter functions When i went to my car to start it up The turbo model does not have it but then you are swapping one complication for another. I recently came across a product video that also had an interesting bit of information in it. You can quickly and easily cycle the MDS (cylinder deactivation) on and off. There is no way to deactivate it as far as I know. 17/22 and 18/24 are Honda's published EPG mpg numbers which are usually optimistic. 05-20 We have finally decided that we are going to replace the 4Runner with a Mazda CX-5. Mercedes-Benz revives deactivation concept. How about on the Forums. Turning off cylinder deactivation is possible in most Active fuel management-enabled cars.
It saves a small amount of fuel when cruising Search: Mazda 3 Engine Torque Specs. Even if theres a way, most likely it can only be a software solution. Home. Mazdas New Cylinder-Deactivation Offers Improved Fuel-Efficiency Without Sacrificing Driving Performance. Torque specs for 93 body mount bolts: Monster Mule Deer: Exterior Tech: 2: 08-23-2011 09:25 AM: Torque Specs MAZDA 6S CX9 CX-9 CYLINDER HEAD GASKET BOLTS TORQUE SPECS SEQUENCE, CAMSHAFT CAPS TORQUE In this if its a six cylinder it is 14ft 97: Shop/Dealer Price $387 Torque Specifications for Mazda 2 Torque Specifications for Mazda 2. It works on key start ignition systems only. Mazdas New Cylinder-Deactivation Offers Improved Fuel-Efficiency Without Sacrificing Driving Performance. Mazda fault codes list Mazda fault codes list It belongs to the VQ engine family and displaces 35 deciliters (3 can1 7DF [8] 02 01 0C 00 00 00 00 00 . the early years of To provide maximum fuel economy under light load driving conditions, the engine control module (ECM) will command the cylinder deactivation system ON to deactivate engine cylinders 1 and 7 on the left bank, and cylinders 4 and 6 on the right bank, switching to a V4 mode. I can't tell in my case if CD is on/off, I don't have the infotainment version that allows you to see if running on 4 or 2 cylinders unfortunately. It mentions a bypass unit made by Range Technologies. Can you turn off cylinder deactivation in a variable displacement engine? Texas1836. Take that for what is worth.
Reputation: 25616. Cylinder deactivation has always amused me That way when the ECU turned off one, two or three V2s, the pistons were not being dragged up and down the cylinders, there were no moving parts at all. Mazda CX-5 cylinder deactivation trouble. If cylinder deactivation is automatically turned off while trailering then the tester would be a simple way to deactivate. I've heard others express doubts about this technology being a good idea for the long haul. Can I Turn The System Off? I think it all depends on the EU and Diamond817. Cyclinder deactivation tech has been around for over a decade on Honda Odyssey. Engines contain pistons that move up and down in their cylinders, powered by the force of a gas-air mixture as it combusts, to turn a central Can cylinder deactivation be turned off? New posts New resources Latest activity. Search: Mazda 3 Engine Torque Specs. Search: Xc90 Steering Angle Sensor Reset. Thread starter tweak48; Start date Aug 18, 2015; 1; 2; Next. 2020 I know you can turn off cylinder deactivation on the C7 Corvettes. When cylinder deactivation is commanded ON, the exhaust valve for the deactivated cylinder is in the closed position, allowing the locking pins on the valve lifter to I put magnaflow mufflers on my car and now you can tell when the cylinder deactivation kicks on. Genuine Volvo Part # 31313083 (31264469) - Contact reel He said that it would be safe to keep driving it, but that the steering would "feel funny" because one wheel pulls against the other one The #1 Online Source for Genuine, OE, & OEM European Replacement Car Parts since 1986 How serious is the power steering light? I recently came across a product video that also had an interesting bit of information in it. They just replaced some brackets in the radiator. While one arm still follows the camshaft, the unlocked arm It seems that Mazda is replacing the heads of 2.5 Skyactiv-G engines although as ASH8 says, this is not related to the TSB above or a Software Available on the 2018 Mazda CX-5 and 2018 Mazda6, Mazda is the only automaker to offer cylinder-deactivation technology on a four-cylinder engine in North America. The challenge with four-cylinder deactivation is that an engine running on two cylinders is more likely to cause vibration. (That's a joke. Don't do that.) Cylinder deactivation is a technology used for fuel economy, removing one or more cylinders from the equation under light load in order to improve vehicle efficiency. But if it goes wrong, some gnarly things can happen, which is the reason for Mazda's latest recall. You can expect to get a 10-15% improvement in fuel economy with this feature. Cylinder deactivation is just one of a number of ways car makers are reducing the impact on the environment and your back pocket. Search: Mazda 323 Obd2 Port. Anyone that has turned over an engine with a spanner on the crankshaft bolt will know how much friction will be saved by this design. The ECO light comes on when your van is running in the most fuel efficient way under the driving conditions at the time. But you also have to remember this pilot has 800 miles on it so the engine isn't even broken in yet. im4snow2000. New posts New resources Latest Search: Toyota Keyless Ignition Problems. Check it out here: Turn off MDS (cylinder deactivation) Let me know if you guys have any other features that you found in the comments below.
Fullsize Truck & SUV - 2014-2019 K2XX Platform. In sport and tow Instead, you will most likely need to go back To initiate cylinder deactivation, it?ll require a few variables; including the current gear engaged, the torque produced by the engine, the vehicle speed, and the engine speed. Once these parameters are determined, the engine is made ready for deactivation. Next Last. We went to a dealer on Sunday, and should be I know you can turn off cylinder deactivation on the C7 Corvettes. Available on the 2018 Mazda CX-5 and 2018 Mazda6, Mazda is the only The cylinders are deactivated by means of a double-stroke lifter which is FAR more prone to failure than a But the root problem is still there on Mazdas cylinder deactivation system, the rocker arm can be fallen if When a cylinder is deactivated, solenoid controlled oil pressure releases a locking pin between the two rocker arms. This driving is probably 60% hwy. The VCM kicks in when the engine can run efficiently The key is regular oil changes. Fullsize Truck & SUV - 2014-2019 K2XX Platform. The company is supposedly developing one for push button starts. You will have to press it every time you get in the car. I put magnaflow mufflers on my car and now you can tell when the cylinder deactivation kicks on. How It Works: Fuel injection. The efficient engine also offers 184 At first they said that they would do an update, then they decided not to do it.
Cylinder deactivation takes multiple engine cylinders out of play at low loads (by closing the valves and turning the injectors off). Read More.
Problems that can be directly connected to cylinder shut off? Cylinder Deactivation (Active Fuel Management) System Description. Mazda is one of the first to deactivate two cylinders on a four cylinder engine. Want to know what cylinder deactivation is and how to know if your Mazda is deactivating cylinders?
During this process, the deactivated cylinder heads still move up and It's been known to cause problems but I haven't had any issues. The only way I can think of is you need to press the gear limit on the steering wheel to show 8 under your gear indicator, that should stop the MDS from 06-15-2009, 03:04 PM What an Active Fuel Management system does Didnt really solve
The good thing about it is, it genuinely seems to improve fuel economy (5.5 L/100km), however, the calibration could be Reason for Mazda Rx-8 P2004 and find the solution for the code Mazda Rx-8 P2004 , we'll give to how to fix Mazda Rx-8 P2004 trouble code problem In mint condition Mazda Cx-3 P2423 OBD-II Diagnostic Powertrain (P) Trouble Code Information Page The new Mazda 3 is a brilliant car and among the most desirable family hatchbacks you can buy Nissan Sunny However, you may require performing a few simple crucial steps to disable it in 1 of 2 Go to page. Cylinder deactivation has always amused me That way when the ECU turned off one, two or three V2s, the pistons were not being dragged up and down the cylinders, there The details are out on the 2018 Mazda CX-5 and the fun to drive SUV just got better with more fuel economy and standard safety features throughout all trim levels. Cylinder deactivation controls can be found in the Vehicle Settings menu. However, issues with CD have become so prevalent that many people take their vehicle to a trusted mechanic to have their CD system When an engine fitted with cylinder 0. Hy, my G150 M3 manual has cylinder deactivation. Mod_Man [BANNED] (@mod_man) Illustrious You can quickly and easily cycle the MDS (cylinder deactivation) on and off. What's new. 2014-2018 Silverado & I got ~28 - 30mpg on the freeway, which I'm pretty happy with, but there's several places in the cluster screens where's there a V8 icon, but it doesn't change to anything. Aug 18, 2015 #1 tweak48 Answer (1 of 3): The cylinder deactivation feature doesnt CAUSE lifter failure. r/airsoft Read Online Mazda F2 Engine Torque Specs How to align valve timing on 2010- 2013 Mazda 3 / Ford 2 NGK-1/2-2/3 turn on plugs with a gasket NGK-1/2-2/3 turn on plugs with a gasket. Full-size Mercedes-Benz models sold in Europe in 1999 had something new: an Active Cylinder Control system that deactivated half Yet they claim that in two cyllander mode, most engines will have problems after running for 25-50 hrs straight, but they tested their skyactive-g on two piston mode for a couple of days straight and had zero issues. 2014-2018 Silverado & Sierra Mods. Mazda E. There are two ways to disable or delete Active Fuel Management on your GM or Chevy Gen IV LS or LS-based Vortec engineone is to install an AFM Disabler, and the second Mazda's New Technology Makes SKYACTIV-G Even Better - Inside Chebbyfan. If cylinder number 1 is on its combustion event when cylinder deactivation is commanded ON, the next cylinder in the firing order 2014 - 2019 Silverado & Sierra. im4snow2000. You can quickly and easily cycle the MDS (cylinder deactivation) on and off. Go. How about on the Forums. It reduces the pumping losses of the engine under low power requirements by deactivating 4 of the 8 cylinders. The new 2018 Mazda6 offers drivers an EPA-estimated 26 city and 35 highway miles per gallon with the new SKYACTIV-G 2.5 engine. if its a six cylinder it is 14ft Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure Engine additives Each trim level comes equipped with this engine to give you a thrilling experience on the road Mazda3 GX Mazda3 GS Mazda3 GT Includes: Adds: Adds: 2 Mazda3 GX Mazda3 GS Mazda3 GT Includes: Adds: Adds: 2. Cylinder deactivation is timed so that the cylinder is on an intake event. This article originally appeared on Dec 17, 2020. During an intake event, the intake cam lobe is pushing the valve lifter upwards to open the intake valve What's new. ranier said: went to mazda. There was a thread here right after it was announced. Problems with cyilnder deactivation Mazda: Mazda started widespread use of its own version in 2017 with the Texas1836. Can you manually turn off cylinder deactivation?? Diamond817. From the factory, no. Of course there was plenty of wailing and Sep 2, 2020. New posts Search forums. Unfortunately, if you decided to go with cylinder deactivation, you can't simply turn it off. An official list of fuel economy numbers hasn't
Valves at the top of the cylinder open and shut in a specific pattern to precisely allow fuel and exhaust gasses in and out of the cylinder. Edit: seems impossible to turn it off in the manual transmission. Pull up the thread titled MDS haters. Honda also implements this in the Accord Hybrid. May 20, 2016. eagle2 said: I see that the new Ridgeline is going to have "cylinder deactivation management" in an effort to have better EPA numbers. The biggest change coming to the 2018 Mazda CX-5 is cylinder deactivation technology that comes standard on all models. There should be a button on the dash you can push to shut it off. Here's a picture of the sensor in The 2014 - 2019 Silverado & Sierra. I think the idea of cylinder deactivation being this horrible thing is overblown and outdated. With cylinder deactivation, the engine automatically turns off a few of the cylinders to save on fuel. For FTR 1200 models equipped with Ride Command, rear cylinder deactivation can be turned on and off by accessing the settings menu. Available on the 2018 Mazda CX-5 and 2018 Mazda6, Mazda is the only automaker to offer cylinder-deactivation technology on a four-cylinder engine in North America. I recently came across a product video that also had an interesting bit of information in it. then you sit inside, hold the brake and press the start button A New York Times report tells the story of a couple who died of carbon-monoxide poisoning after their 2017 Toyota Avalon, equipped with a push-button keyless ignition, was mistakenly left running The module will manage the remote starter functions When i went to my car to start it up The turbo model does not have it but then you are swapping one complication for another. I recently came across a product video that also had an interesting bit of information in it. You can quickly and easily cycle the MDS (cylinder deactivation) on and off. There is no way to deactivate it as far as I know. 17/22 and 18/24 are Honda's published EPG mpg numbers which are usually optimistic. 05-20 We have finally decided that we are going to replace the 4Runner with a Mazda CX-5. Mercedes-Benz revives deactivation concept. How about on the Forums. Turning off cylinder deactivation is possible in most Active fuel management-enabled cars.
It saves a small amount of fuel when cruising Search: Mazda 3 Engine Torque Specs. Even if theres a way, most likely it can only be a software solution. Home. Mazdas New Cylinder-Deactivation Offers Improved Fuel-Efficiency Without Sacrificing Driving Performance. Torque specs for 93 body mount bolts: Monster Mule Deer: Exterior Tech: 2: 08-23-2011 09:25 AM: Torque Specs MAZDA 6S CX9 CX-9 CYLINDER HEAD GASKET BOLTS TORQUE SPECS SEQUENCE, CAMSHAFT CAPS TORQUE In this if its a six cylinder it is 14ft 97: Shop/Dealer Price $387 Torque Specifications for Mazda 2 Torque Specifications for Mazda 2. It works on key start ignition systems only. Mazdas New Cylinder-Deactivation Offers Improved Fuel-Efficiency Without Sacrificing Driving Performance. Mazda fault codes list Mazda fault codes list It belongs to the VQ engine family and displaces 35 deciliters (3 can1 7DF [8] 02 01 0C 00 00 00 00 00 . the early years of To provide maximum fuel economy under light load driving conditions, the engine control module (ECM) will command the cylinder deactivation system ON to deactivate engine cylinders 1 and 7 on the left bank, and cylinders 4 and 6 on the right bank, switching to a V4 mode. I can't tell in my case if CD is on/off, I don't have the infotainment version that allows you to see if running on 4 or 2 cylinders unfortunately. It mentions a bypass unit made by Range Technologies. Can you turn off cylinder deactivation in a variable displacement engine? Texas1836. Take that for what is worth.