Back to the topic of deleting the crossover (either H-pipe or X-pipe) in the pursuit of sound, the Engine Masters show revealed that having a crossover absolutely produces more power across most of the rev range (idle to ~5k, IIRC). I'd be pretty hard pressed to take the H-pipe out if you already have one installed. I'd just get rowdier mufflers and keep the H-pipe if you want it to be more aggressive.
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1966 Pontiac GTO ( restoration thread)
1998 BMW 328is ( track rat)
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