Quote:
Originally Posted by Ryland
The Z1 engine and o2 sensor do not handle over sized exhaust or exhaust leaks without burning out the $300 o2 sensor within a few months, if you get a new o2 sensor you need to fix the exhaust to stock or you've just wasted money.
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Shouldn't be a problem as long as I don't go too far beyond 2 inches. People have gone all the way up to 2.5. I'm just going to 2.25 inches.