Stealth Module - Chevy/GMC Duramax LLY/LBZ 6.6L (2004.5-2007)

2005 duramax

Have a 2005 duramaxwith 220,000 miles. Installed the stealth 2wks ago. Runs and pulls better than when it it was new. Thank you, Stealth engineers

2004 chevy 2500 hd lly

So far the truck runs great. Engine seems to be smoother and quieter. Definitely more low end power from stop or slow roll. Time will tell but so far I would recommend

2005 chevy 2500hd

I am pleased with the stealth mod. I have seen great improvements in fuel mileage and power. Have yet to pull with it but daily driving is so much better