2in arh
#3
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Overkill=no, Unnecessary=yes With FI you want to get rid of exhaust gases without building backpressure. I doubt you'd see much hp difference 1.75" to 2" given your specs.
#4
TECH Regular
Thread Starter
iTrader: (19)
Join Date: Feb 2006
Posts: 493
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
right know the car put down 730rwhp on epp mustang dyno with 1 3/4 headers.they could only take it to 5900rpm due to it running out of fuel,now the car has a full fuel system alkycontrol meth kit,and just trying to find the right headers before I take it back.