Thread: Factory h pipe
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Old 05-04-2019, 04:04 PM   #2
Junior Member
Join Date: Oct 2009
Posts: 27

The stock replacement will work if you still have the air pump and supporting hardware. If you use a stock style without them you'll kill the cats.

If all the stock air pump stuff is gone you can go with new style hi flow cats welded into the off road pipe that don't need air injection to stay alive.
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