Originally Posted by DoomsdayFAN
I've been thinking a lot about buying the 4-1 Header and putting it on right after smog season. Hopefully that, in addition with a CAI & Stealth Exhaust, will increase my get up and go
over stock quite substantially.
I have all of the above and I wouldn't necessarily say it a "substantial" difference from stock...Its better then stock but dont get it twisted. For a substantial difference you will need to boost it up.