There's a guy on here that goes by PPE'dpowerstroke that ran a ppe. You should pm him for his opinion.Yea I hear that guy was pretty awesome ^^ but all seriousness I ran the PPE on my 04 250 on level 10 for 40K hard miles and never had any problem, and those were with stock bolds, gasket and egr was still there. I couldn't have been happier with it for what I needed, driving around town and a little highway I was 17-18 MPG with a 4x4. Archicad 16 Sketchup Plugin Store. It's soo much better than a SCT canned tunes but I never got around to custom tunes with it. Plus it got me to low 14.3xx's at the strip and the transmission loved it.

PPE air box mod with K&N filter, Debadged (except the duramax emblem), EGR Blocked, Resonator plugged, PPE Xcelerator Standard (on tune 3), BD full bore manifold. Diamond Eye turbo down pipe. Diamond Eye front pipe back Stainless Exhaust, Transgo Jr., Mobil 1 front and rear differential, TransynD. PPE HOT+2 E.T. Xcelerator Tuner for 2001 through 2010 GM Duramax diesel.

Yea I hear that guy was pretty awesome ^^ but all seriousness I ran the PPE on my 04 250 on level 10 for 40K hard miles and never had any problem, and those were with stock bolds, gasket and egr was still there. I couldn't have been happier with it for what I needed, driving around town and a little highway I was 17-18 MPG with a 4x4. It's soo much better than a SCT canned tunes but I never got around to custom tunes with it. Plus it got me to low 14.3xx's at the strip and the transmission loved itMy good buddy runs his truck all the time, he runs 14.44's with his custom tuned SCT.