Quote:
Originally Posted by Jsuper392
Tuning my ZL1 and going flex fuel. Tuner doesn’t recommend going catless or getting headers for my set up. But I thought just going catless you’d gain hp?
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Its more complex than that. The ECU protects the cats and will dump fuel to cool them and reduce timming at certain temps. If you only do hero pulls here and there. Keep them. If you put your car through its paces, its beneficial. HP Tuners should allow you to pass inspection if they dont do visual/sniffer test.
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