...you see! I'm TELLING YOU; if you had stock 16/17" wheels with your mods you should be right around 260-265whp...With your 20's you should see around low 250's IMHO. I KNEW you were 10-15whp too low...even for your heavy a$$ wheels.

This is the only reason why I contributed to this thread...to give you feedback on your results so you can go back to the drawing board and troubleshoot; not to bash you.

Now get back to that dyno!

 

Not to thread jack or anything . But Im going to be going to the dyno with my car as soon as i get my Apexi Neo in. How much Hp should i be expecting with stock 17's with the mods i have? thanks for the help. Is 270WHP out of the question?

 

not to be a downer, by then, your e[brake would have been a non issue. It would have been obliterated.

 

^^^ i know, and i dont think the car would make more than a few hp more. i mainly want to go back and do back to backs with smaller wheels/tires. but i need to get a legit baseline (without ebrake) to compare the 2 wheel dyno's. im not going back solely based on the ebrake being on. ive seen lots of people dyno with ebrakes pulled and usually there is a fire that ensue's shortly after lol

the ebrake either doesnt work that great, or wasnt pushed very hard. other wise the #'s would have been a LOT lower. and i probably wouldnt have been able to drive the car away lol

 

Yes, FYI a stock GS4XX will dyno around 240-245whp...if the Neo will add another 15-17whp, your intake and exhaust only probably adds another 5whp...I would guess 260-265whp...closer to 265whp if you get the TM spark plugs...test results really show they DO add power!