Quote:
Originally Posted by Mt Tam I am
Cool beans. I would have thought a worse reading. How much actual HP do you gain removing the catalytic converters?
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10-15hp over stock cats I would say.
For street driving the biggest issue is hiss and rasp at lower RPM's, but once it's revving the sound is very nice.
Exhaust leaks are a problem though, the only gasket you can use that works is the metal gasket from Z1 which is similar to OEM design but perhaps stronger.