Quote:
Originally Posted by steve99
If your in california i believe any change to exhaust emmiss il ns systems eg cats is illegal.
Another option if you have e85 stations near by is just retune for e85 fuel on a completly stock car.
You will get about 20 hp increase likly more than with catted header and petrol especially cali 91 and no physical mods required ie car llòoks stock
You could use oft and reflash or go ecutek with map switching tune
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E85 is not available in my area as far as I know. I'd rather not depend on a type of fuel that isn't readily available in my area. And technically my q300 is already "illegal".
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