DiabloSport P2040 Extreme PowerPuck Inline Device for Duramax Diesel 2011

Well as far as this working on the 2011 it isn't worth a damn... so for that it gets docked in rating. However I just took it off my 2011 when I traded it in for my 2008 lmm duramax and figured I would try it out on it! It's kinda hard to install on the lmm but I must say I was impressed with the amount of difference I saw! Saw actual power gain and a difference in fuel economy! So all in all if your looking to buy this for a 2011 I wouldn't but if you are wanting one for the 2007.5-2010 lmm model it is well worth the money!

Put on 2011 Chevy Duramax and power level was not noticed and/or fuel mileage gain.