transam69230

iTrader: (49)

I just switched from SLP 1 3/4 headers to ARH 1 7/8s and the car seems to be down on power. The car went 10.50@130mph on a 150 shot of nitrous with the smaller headers. I did the swap and the car would mile an hour not much over 123mph. The car never got a re-tune after the big headers, which I am going to soon. My really questions is has anyone had experience switch headers and losing power ? The car is stock cube with a lg G5x3 cam with tfs 215s.

I think a tune will help out it and put it back where it is suppose to be. My buddy thinks that I should put smaller headers back on the car. What are your thoughts on this as well?

IrocZTransAm

A friend did the same switch as you, lost a few tenths and mph. Got a new tune, and back to normal and a bit faster. His A/F was off with the new headers. I don't know if it normal to do so but it happened.

briancb1

How much power did u get? How much did it all cost you?

2002camaroSS

iTrader: (8)

He has never redynoed the car but he lost 7mph in the 1/4 by switching so far he is off in the wrong direction.