Quote:
Originally Posted by STV3
Judging by the pics and dyno I'm guessing that there wasn't all that much money dumped into that Cobalt. Im guessing just an intake and tune?
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correct. The time this dyno was done, I had an intake, downpipe, Forge BPV, and a tune.
The tune had some timing advance and the boost setting was set to 20psi. This tune gave me some long term trouble and I had the tuner retune. Basically the wastegate immediately closed as you touched the throttle and the car was not very daily driveable at all.
The new tune is set to 24 psi and I had him torque limit 1st gear and slowly ramp the boost with RPM so the car behaved better for Daily driving. Still basically an on/ off switch around 70% throttle though. Car makes more torque and power now, no dyno to prove it but the clutch wont hold it anymore. Stock clutch was rated 320 trq. If I had to guess Im where everyone else is with the similar bolt ons. ~320ish whp and 360ish trq.
Blow off valves / By pass valves are completely cosmetic on a stock turbo.