Stock Run on a dyno jet (sorry for the quality dont have a scanner)...

163.85hp and 146.52 torque

Run with HKS catback and Injen short ram intake
pull in 4th but accedental down shift to 3rd


171.2hp and 154.5 torque

 

you must be able to feel the difference with that much torque added... that a/f is pretty consistent... i guess D.I. does make a difference.. do you have a/f for the last graph ?

 

the diffrence is very noticable and the sound is great.......my friends all have bimmers, infinitis, and mercedes and sweat the sound.....but in speed i can beat the mercedes but the 330i and the g35 coupe are in another country after 40....... but for the few seconds that im next to them they cant believe the sound and the mercedes(2007 c230) must love the sound of the exhaust lol

 

I am thinking of getting this......do you have a video clip you can post of the sound? For the money it cost for both of them, the little extra power doesn't seem worth it LOL