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Discussion Starter · #1 ·
I've seen 2.5 inch test pipes from 42dd but does any one make a 3 inch test pipe???
also is the only difference between a obd1 test pipe and an obd2 is that there is an o2 bung and the end of the pipe for the obd2 catalyst monitor??
thanks http://****************.com/smile/emthup.gif

Modified by shortshiften at 3:46 PM 11-24-2006
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