Baseline run with only the intake/smooth bellows: 298rwhp

Installed an ASP crank pulley, borla stingers, WCC xpipe and new plugs: 312rwhp/320rwtq

So, I picked up 14rwhp with the exhaust and pulley, but that was with NO tuning (just dyno pulls) and the computer is pulling timing like a **** up top. It climbs to 311 real early then just plummets when the computer pulls back. I'm gonna pick up a Shaner s2 and an ls6 intake and then head back for some tuning. I'm sure I'll reach 325rwhp.

 

congrats man! get some tuning you will definately gain some!

 

How do you know the PCM is pulling timing out??? Did you at least get your AFRs

 

yea, the readings are on the bottom of the sheets, right?

 

The AFR is usally shown at the bottom of the dynograph. How do you know the PCM was pulling timing???

 

that's what they told me

 

Dunno why it would be pulling timing. My C5 with just an intake and a flat *** HP curve and had no timing issues whatsoever.

 

I bet you could add some timing. Only reason why it would be pulling it is if the gas was bad or low octane I think. Never had this problem in the Z06 but in the Trans Am I did once.

 

well, all gas in Cali is bad...we top out at 91 octane.

 

I made 519 rwhp on cali 91 octane. Who is "they".

 

off topic but isnt 298 low for a C5?? i thought bone stock Z28's and Trans Ams make that. Are you an auto?

 

It does say A4 in his sig.