- Use the auto-stick feature on your transmission if so equipped. When the transmission is in auto-stick mode, MDS is deactivated. ...
- Install the high-performance Mopar cam in your engine, which will disable the MDS system. ...
- Use your aftermarket tuner to disable MDS.
Is MDS bad for Hemi?
On the surface there's nothing wrong with MDS. The power from the large 5.7 liter displacement is still there when you need or want it. However, when you don't then the engine is more efficient .
Can you disable MDS on Hemi?
MDS is a “multi-displacement system” that deactivates a cylinder bank on the Chrysler's Hemi V8 engine to operate in four-cylinder mode for greater fuel efficiency. ... You can disable this MDS system through a variety of means; from software reprogramming to hardware modifications .
How do you turn off the MDS on a Dodge Ram?
- Use the auto-stick feature on your transmission if so equipped. When the transmission is in auto-stick mode, MDS is deactivated. ...
- Install the high-performance Mopar cam in your engine, which will disable the MDS system. ...
- Use your aftermarket tuner to disable MDS.
What is turning off MDS?
MDS is a “multi-displacement system” that deactivates a cylinder bank on the Chrysler's Hemi V8 engine to operate in four-cylinder mode for greater fuel efficiency. ... You can disable this MDS system through a variety of means; from software reprogramming to hardware modifications.
Does MDS damage engine?
I also come across an article about the hemi engine equipped with mds has defect on the timing belt , when it snaps, it's causing engine damage. This happens to 09-11 5.7 hemis for chargers, challengers. and usually happens at highwhy speed when mds is kicked in.
Can MDS be turned off?
When the transmission is in auto-stick mode, MDS is deactivated . This is the only way to disable MDS without performing modifications to your vehicle. You can leave the transmission in fifth gear and it will shift up and down as needed, but the MDS system
How do I know if my 5.7 Hemi has MDS?
Registered. To be 100% sure check the 8th digit of the vin . If it is D then no MDS. If it is 2 then your truck has MDS.
Does MDS cause lifter failure?
MDS does not have anything to do with the mechanical failure of the roller lifter. The failures occur on both MDS and non-MDS lifters. The bearings on the roller tips seize and flatten the cam lobes. I have had lifter failure occur on 5.7's and 6.4's even after MDS has been deleted.
How do you know if MDS is working?
There is no display to tell you MDS is active or not , it's all feel and sound. It is VERY easy to tell when it drops to 4 cylinders if you have a really loud exhaust, motor sounds completely different.
Does sport mode Disable MDS?
Yeah MDS is deactivated when you are in sport mode . It is also deactivated when you are in a normal drive mode, and just place the transmission in manual shift mode.
Does MDS save gas?
The Chrysler Group MDS seamlessly alternates between smooth, high-fuel-economy four-cylinder mode when less power is needed, and V-8 mode when more power from the 5.7L HEMI engine is in demand. This optimizes fuel economy when V-8 power is not required, without sacrificing vehicle performance or capability.
Does my 5.7 Hemi have MDS?
The 5.7L Hemi V-8 engine with MDS was available in a number of Dodge, Chrysler and Jeep vehicles. In 2005, it was available in the Chrysler 300C, Dodge Charger, Dodge Magnum and Jeep Grand Cherokee. ... However, the MDS will not be available in cars with manual transmissions .
Does 6.4 Hemi have MDS?
While the automatic transmission-equipped 6.4L/392 HEMI V8 engines use a Multi-Displacement System (MDS), manual transmission versions of this engine do not have MDS (similar to the 2009 to current 5.7L HEMI V8 engines).
Does Tow Haul mode disable MDS?
Registered. Correct, using the ERS buttons on the 8 speed will disable MDS, tow/haul will not . You can manually choose 8th gear and it will turn off MDS. Tow/haul will not feel like a big difference like other vehicles.
