Quote:

Car had 12" turn down extentions, I also when down about 3 jet sizes if i remember right ,Was 1996 I thought it was a wash since the short times where better but lost 1 mph..



Thats strange, I always jet up on a header only car
and jet down with exhaust(due to the back pressure)





I was going from OPEN HEADERS TOO FULL EXHAUST!! IS THAT CLEARER!!!

I was only posting my results to help inform the OP,
A simple I misunderstood is fine

Last edited by 4406brl; 06/06/11 11:18 PM.