575whp on 6262 setup...opinions on whats wrong with my graph?
Apr 28, 2010, 05:02 PM
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575whp on 6262 setup...opinions on whats wrong with my graph?
So I got tuned on Friday night to come up with 575whp on pump 93 and 100% methanol. The tuner (and i) agreed to stop tuning because it seems there is something choking up. Notice in the graph how the power dips at 7200 rpms. This was at 34psi
The tuner feels its my Turbo XS catback that is choking me up. Opinions?
Mods:
Built 2.0 (8.5:1 CR)
ETS Equal Length 6262 (.82 a/r)
Magnus SMIM
Boomba 75mm TB
Turbo XS Exhaust
GSC S3
Buschur Dual Valve Springs/ Retainers
Labonte meth
Sparktech non-cdi
The tuner feels its my Turbo XS catback that is choking me up. Opinions?
Mods:
Built 2.0 (8.5:1 CR)
ETS Equal Length 6262 (.82 a/r)
Magnus SMIM
Boomba 75mm TB
Turbo XS Exhaust
GSC S3
Buschur Dual Valve Springs/ Retainers
Labonte meth
Sparktech non-cdi
Last edited by Wht9er; Apr 28, 2010 at 05:50 PM.
Apr 28, 2010, 05:27 PM
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Bobby i cant see it being the exhaust because my megan stealth catback has a resonator and a huge muffler maybe that magnus Intake manifold is doing something or maybe a bad sensor somewhere?
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Apr 28, 2010, 05:54 PM
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I would've guessed ignition issues, but you've got the sparktech unit. What plugs/gap?
What did a/f do above 7k?
How was your timing in the top end? I'd try reducing boost a couple psi and adding a degree or two of timing to see if that helps above 7k.
Marshall
What did a/f do above 7k?
How was your timing in the top end? I'd try reducing boost a couple psi and adding a degree or two of timing to see if that helps above 7k.
Marshall
Apr 28, 2010, 06:03 PM
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Hmm....choking you say huh? Does the car feel like it's just kinda...i dunno missing something? I can say that a nasty boost leak at my TB robbed me of close to 50whp and made the car feel like it was ...well....missing something. I had to break down the UICP/LICP into two different sections and really do a thorough boost leak check to find out it was at the TB. My suggestion is to try that. If you do a THOROUGH boost leak check then if nothing else you've done your car a solid by ridding it of any possibilities.
Apr 28, 2010, 06:12 PM
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we did a boost leak test...had a minor one but fixed it. Not sure of the AFRs or timing but the plugs were gapped at 24 and we then gapped them down to 21. Misfiring is not the issue. Also, the car did not pull any timing during the pull.
