[65fastback2+2]

Originally Posted by Briansmach1

Hello all I am new to this. I just bought an 04 mach and love it. My question is this I bought a predator off of ebay and installed the tune. I did not touch nothing in the tune just put it in like it is. I felt a diffrence down low. I ran the car at a 1/8th mile drag strip and the car runs fine when it is cold but when it is up to temp it seems to loose power. Is this the programmer? I got into a shoot out with a 98 vet and I do need to say I won 2 out off 3 but first pass ran a 8.83 @ 82.5 next pass went a 8.90 @ 80 next pass went a 8.99 @ 78. The car is stock with a k&n and this programmer and just flowmasters. Any info would help. If I need to i will put stock program back it to keep from hurting my car if yall think this is a problem. Thanks. Oya it is the R50d ver.

sounds just like heat soak....what were the temps and humidity outside?

just depends on the car too...i can hot lap mine and run the same times everytime