Did ya yank both resonators?

 

I understand the comment "if I was worried about mileage I would have bought a Honda," (or something close to that) to a point that since a hemi is an engine known for it's fuel efficiency, or lack thereof. The part I don't get is what's the big deal with leaving the mds on. If I remember correctly it only takes 4 hundredths of a second to switch from mds to non mds and visa versa. Are we talking the sound? Are we talking "no one is going to think I am 'cool' if they don't hear my truck sounding loud at any and all speeds?" I'd suggest using the money you are planning on spending on gas on a shrink about your problem. I have found since I put my flowmaster on my truck that less than 50% of the time am I running on 8 cylinders. I really wish mds would engage when I am idling at a light and burning the most gas. It would be a nice addition to the 2008 or later trucks to have an mds on/off switch in the cab so you could use it as you want.

 

ive heard that even then you still have to get the mds disabled

 

I dont think a shrink would be able to fix the anoying loud vibration I feel in the truck whenthe MDSkicks on. But hey maybe your shrink is a mechanic too.

 

Do you know of anyone who has been able to have it disabled...just curious

 

i think...and im not real certain, but whoever said they wanted a cam but also wanted to keep MDS, i believe the 6.1 cam is compatible with MDS, and will still give you some good power gains. also there was a thread a while back in here, and ive tried searching for it and just cant remember the name of the thread, but it was a link to a cam setup that would completely disable MDS. the cost was around $500 if i remember correctly, and they were advertising that the cam, an intake and exhuast, would put you at about 350 at the rear wheels.

 

So has anybody tried asking the dealer to disable MDS also how are the tuner chips has anyone tried the tuner program that disables MDS. I am new to American V8 Power but I bought a Hemi knowing it eats gas if I wanted to save gas I would have kept my 06 Honda Element instead traded it in and lost 8,000 bucks in a year I owned it.

 

also another place that offers the service here http://www.krcperformance.com/krc/in...&Itemid=26
scroll down to the blue text.

 

Johndcjr1989, the 6.1 cam does not work with the mds motor. There is a company that has mds ground cams but I can not think of the company right now.

Even though pirata and I have seemed to disagree a few times on this forum I must agree with him that I like my mds. I have a dumped exhaust and I sure as hell can hear that mds kick in, pretty much all the time. However, it really does not bother me and if I am cruising slowly and want to sound good then I will stick it in tow/haul or o/d off. Also, pirata is correct about it shutting down almost instantaniously. I hear people whine and moan about the mds all the time but it does not bother me and I will take the best mileage I can get, even if I do drive a truck with a drinking problem.

 

all im running is cats rightnow it sounds good but i gonna put an flowmaster muffler on it and run it to two 5inch bell tips