Quote:
Originally Posted by Kerry
So when the car shift from 3 to 4th at wide open throttle if the boost is around 17 or less every thing is perfect. If it 18 or more its like the exhaust valves close. It goes quite. power is still their but quite like the valves are closed.
Anyone ever had a problem like this? Its driving me nuts. straight pipe wonder, seems impossible, but could the exhaust shut the valves? Seems impossible?
Any input help much appreciated!
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I have this issue too. It’s really annoying. Happens to me while rolling into power in third. Car goes really quiet from 3700-5000 rpm.
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2SS A8 D1X Stage 2, 3.7 pulley, Kooks LT 2″, Borla XPIPE/ GPI drop ins,Caddy Racing Lifters, ATI Damper, LPE GT35 Cam 42%, LPE Big Bore, FIC 30% Injectors, Fore Twin intank pumps, Flexfuel, MM wild catchcan.
865 WHP 743 LB FT
2Forge 19" wheels daily, Forgestar D5 17" for track
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