I just finished my GDE Ecotune and DPF delete about a month ago I have noticed a good increase in MPG 2 maybe 3 MPG, the problem is its also hunting season where I'm at so I put a ton of miles idling down the road and also its getting to be the 50/50 mixed of #1 and #2 diesel here so that is throwing everything off on top of it. I did have a trip to CO a month ago and averaged 22 MPG running 80-85 MPH, on the way back with about a 30 to 40 MPH side wind I was still doing anywhere from 19.5 to 21.5 at the same speeds. I can't wait for May to come when we switch back to straight #2 up here.
2008 Grand Cherokee Laredo CRD - QDII - GDE Tune Oct 2013 - DPF delete by tnadanzig
2002 Grand Cherokee Laredo 4.7L - ST - Stock (Wreaked)
1999 Grand Cherokee Laredo 4.0L - QTII - Stock
1997 Grand Cherokee Laredo 4.0L - ST - Stock (Wreaked)