I have the stock manifold on and sounds great again. Once I get the silver plate, ill be installing and troubleshooting again. When the issue is fixed, ill post the fix action here and the results in this thread for closure as well as the M370 thread because its a much larger thread and more popuar.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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