Just an FYI....there is no part number diffrence between MDS/Non-MDS exhaust part numbers. There is a part number difference between IE392 sales code ACQ and Non-ACQ 392 exhaustIt should be the same exhaust for an IE and non-IE 392 SRT8. The only difference was the tips, where the IE has the clamped-on Quad tips, and non-IE's have the standard single-outlet tips. I'm not sure the difference between the 6-speed and auto 392 cars, as the auto cars have MDS, and the drone takes more effort to control on those cars.
I can't answer that. I did speak to the Engineer here at work who wrote the engine PCM calibration for the 6.4L/Auto trans combo. I was inquiring about getting a little bit more powah out of my R/T. He told me it would benifit me to install the SRT exhaust. He said they got it right on the 6.4L and the exhaust note was sweet. I personally havent heard one yet but now I'm wondring if he was talking about the IE model? :scratchhead: I must pick his brain again.Interesting to know... Short of the tips, there's been nothing written about, or can be seen as a difference between the IE exhaust and non-IE.. I wonder why the different part numbers..