Those numbers sound good to me. I got an exhaust sponsor verociuosmotorsports.com. I got mine dyno'd stock at 223hp 220tq to the wheels stock on a dynojet.They put a full exhaust h-pipe set up on and got 228hp 228tq . 04 performance upgraded 18inch chrome nissan wheels(heavy). It loses a lot of power to the wheel.

 

Stock Z's put out 238....so yes, the mods should give him 22 horses

 

i was wondering does the "Varis Air Duct" make any differences in performance wise? it sure does look good and was the cutting part hard?

 

Take it to the track

 

I had my 04 G sedan on the dyno last year and bone stock less KN filter put down 231RWHP and 224TQ on a dynojet. Then a couple of months later on a dynopak put down 237HP and 229TQ. I think those numbers he is putting down could be correct. Just my .02 Mine is a 6MT.