What is MDS on a Hemi?
Chrysler’s Multi-Displacement System (MDS) is an automobile engine variable displacement technology. It debuted in 2006 on the 5.7 L modern Hemi V8. In order to preserve the characteristic rumble of the V8 engines, Chrysler and Eberspaecher North America designed a special exhaust system for MDS-equipped vehicles.
What does MDS mean on Dodge Ram?
Multiple Displacement System
In the case of the Chrysler/FCA third-generation Hemi, the system is called Multiple Displacement System, or MDS for short. The LS engine family from GM uses a similar technology called Active Fuel Management (AFM).
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.
How do I disable MDS?
You can disable this MDS system through a variety of means; from software reprogramming to hardware modifications.
- Use the auto-stick feature on your transmission if so equipped.
- Install the high-performance Mopar cam in your engine, which will disable the MDS system.
- Use your aftermarket tuner to disable MDS.
Do police Chargers have MDS?
MDS-Equipped Hemi Engines In 2005, it was available in the Chrysler 300C, Dodge Charger, Dodge Magnum and Jeep Grand Cherokee. As of December 2010, the Car and Driver website says the 6.4L Hemi V-8 engine with MDS will be available in the 2011 Dodge Challenger SRT8, as well as the other upcoming SRT V-8 models.
How do I know if my RAM 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.
Is MDS bad for your engine?
Is MDS bad for the engine? No, the MDS is not bad for your engine. The whole idea behind this system to actually to improve fuel efficiency. The only complaint about the MDS is that drivers can only use four cylinders instead of eight.
How do you know if you have MDS Hemi?
How much fuel does MDS save?
With the addition of MDS to HEMI-equipped Dodge Durango and Ram, MDS-equipped vehicles through the end of the 2007 model year will save more than 60 million gallons of fuel each year.
What are the signs and symptoms of MDS?
People with MDS have abnormally low blood cell levels (low blood counts ). Signs and symptoms may include dizziness, fatigue, weakness, shortness of breath, bruising and bleeding, frequent infections, and headaches. [1] [2] In some people with MDS, the condition progresses to bone marrow failure or develops into acute leukemia. [1]
How does myelodysplastic syndrome ( MDS ) affect the body?
Myelodysplastic syndromes, or MDS, are a group of disorders in which a person’s bone marrow does not produce enough functioning blood cells. MDS is a type of cancer. MDS damages some of the blood forming cells in the bone marrow, leading to low counts of one or more types of blood cells.
How many people are diagnosed with MDS each year?
MDS is a type of cancer. MDS damages some of the blood forming cells in the bone marrow, leading to low counts of one or more types of blood cells. The American Cancer Society (ACS) say that the exact number of MDS diagnoses each year is not clear. Some people estimate around 10,000 diagnoses each year, but others believe there are more.
Is there a way to disable the MDS?
There is a way to disable the MDS with a handheld “tuner”, but simply pulling a wire won’t do–the computer would just diagnose a fault with the system and I’m not sure how this would affect the vehicle’s running. Since your problem appears to be mechanical, simply making the system not work any more would not help, in my opinion.