I had the Trifecta tune for about a year and I didnt have any problems...I thought it was one of the best mods I did. I took it off 2 days ago and it seems the car runs more "smooth" but I can tell a difference in the gearing for my automatic. IPF, well I wont be able to help you with that opinion since the supercharger is going along with it lol It seems like it is pretty advance though and I havent heard one person complain about the IPF. Trifecta has been slammed and its pretty hard to get in touch, which is one of the downsides.
When you turn your car on, does it return the favor?
-IPF SUPERCHARGER, Injen CAI w/Hydroshield, MRT V2.0, VMAX Ported Throttle Body, VMAX BLACK ICE-o-lator, Black emblems, Rear Fascia blackout, Bottom Front Bumper blackout.