:( I bought it brand new and worked great. I installed in a friends truck and it's cutting back power on top end. So I installed it back in my truck now the samething is happening to my truck. Pulls mint until up top. Truck is only going 100 mph compered to 104 before. Any thoughts what it could be.:(

Sounds like it could be tire size issues. ?? I'm not sure. I have a Predator, and 2 Stealth tuners, and from what I understand the PPE is the same type, so it should have tire adjustments, and maybe top speed. Have you tried removing it, and re-installing? Some times these type tuners get a glitch.

:) Thats going to be my next step. If not on Tuesday I'll call PPE and see if they have had this problem before. Maybe it needs to be reflashed or something. Thanks for the input.