07 GT E UPP

My Kooks LT headers (ceramic coated) with high flow catted h-pipe personally gave me a good seat of the pants increase in horsepower. However, the one piece aluminum DS seemed to only to help it rev freer... similar to the feeling you get with UDP's. Next Mod and maybe last (ha,ha) is a Whipple.

Have fun....

VistaGT

Yea, my thing about the headers is 1. they're illegal in NJ regardless of emmsions and how much hp could I really expect to gain on top of the O/R H. I know it's 15hp on average, but that's not on top of the O/R pipe.

BTW everyone overlooked my question lol, what do you guys think of the AFR? too lean or what?

Thanks!

06elnr

mine is putting out 309 with just a few mods as well. sounds like we have two exceptions to the rule...LOL. my tuner is how I think I got that much power, he messed around on my car for a whole day and did like 12-15 runs on it.

VistaGT

Good number! So you have a dyno tune then? If so it shows just how good these email tunes can be! BTW did you get that # with the shorties? I was thinking of picking up a set myself

MorePowerMike

Yes, too lean. 13.5 at WOT... holy moly too lean. That's probably one of the reasons you got those numbers. That leaner a/f will give a better dyno number, however will be more likely to ping under heavy load on the road.

For N/A cars I like to have WOT at 12.6/1 Supercharged at 11.8/1.

Were any of those numbers stock?

Hi-Jack: Does anyone have stock vs tuned dyno graphs?

Rubrignitz

If I wouldn't be having to work my azz off lately I'd love to put my car on the local dynojet. Just need a few hours between the hours of 8 and 5 and that ain't happening without taking leave, which I'm trying to build up to two weeks for spring break.

All these "variables" like 4.10 gears, 20'' rims/tires (just went back to 18's) and such.

I really wonder about dyno's and number's and types etc. My numbers are great, but who knows what corners they cut to get me those.

I think the only solution is to go to three or four different dyno's/shops and get an "average". dyno runs are so goddamn expensive though!

cheftjpeck

great numbers....congrats

S281 E

Nice numbers

raiden

Those are great numbers for the mods.

mygt500

Great numbers for said mods.....I really was off on that one!