Originally Posted by
ala_xfire
Well, here is the sum of my knowledge on the NA engine, listing the mods I have done :
1. Needswings CAI ( single, dual is overkill on an NA )
2. 74mm throttle body
3. Eurotune engine tune.
I think ( no dyno ) I am somewhere around 260 HP with these mods.
From EVERYTHING I have read, exhaust mods return very little on the $ spent, although I did install an OBC Racing catback ( Borla Chinese rip-off ).
The only thing I might still do is a brake upgrade with SRT6 front rotors and calipers.
There are some dyno charts on here showing NA hp and as I recall they do not show too much above 200 hp at the wheels.
A factor of two increase would mean 400 hp and the SRT engine can just make it. Figures are from my head so I might be out a few hundred hp.
I am not answering the first post so any inference that I am is purely conjectural.