MDS doesnt work...its just a gimmick advertising plan from Dodge. The GM's system actually work and this is why the Silverados/Tahoes/Avalanches get 20mpg +.

 

wow i guess i was really wrong in thinkin they should put it on the 4.7 lol. I had no idea it was such crap and such a gimmick. My new opinion is get the damn hemi hybrid on the road haha . And have the option that when you buy the hemi the dealer can just switch it off and on if you'd like . Save ppl money on buying a programmer to do it. If the dealers are even allowed to do that. guess it might cause issues with the environmental restrictions they have now.

 

my 07 get from 17 to 23 mpg (us mpg) on the hwy using the MDS. I recently took a trip in an 09 silverado, a 4 hr round trip burned over 3/4 tank of gas. so much for chevy mpg.