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Originally Posted by Eric10905
Guys, thanks for sharing the experience and perspective.
How about secondary cat delete, with regard to decibel level or HP? Or a single high flow cat?
again, mine's not a daily, and I'm not in Cali. But i am in Austin, which is trying to be like Cali. And last thing i want to spend time on is issues getting a new inspection. I was considering just doing headers, and leaving everything else in place, including the sec cat. if possible. i was guessing not much HP gain for removing the second by itself (eg not when coupled with headers or other changes)..... but don't know.
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its not possible to do long tube headers and keep the factory cats. Well you could weld the factory cats down past the headers but that would take the sound and power gained away so why bother. the car comes stock with shorty headers so nothing to gain by putting shorties in it.
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real ZL1 wheels and brakes, 285/305 Michelin Pilot Super Sports, Pray ported Intake manifold, Soler Throttle Body, Rotofab intake, EFI Tuning Flex fuel kit, full American Racing Headers Exhaust, 1 7/8" w/ cats H pipe and mufflers. Full 1LE suspension, with BMR adjustable sway bars and links, GM aluminum cradle bushings, Hurst shifter with lighter reverse spring, TWM shifter knob, Tick level 1 transmission. I should have bought a ZL1
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