high flow cats question?
07-20-2011, 11:11 AM
#11
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Join Date: Dec 2009
Location: North Vancouver, BC Canada
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How would I know if my cats are plugged or getting plugged? I have a rattle when the engine is cold but I think it's just from the heat shield. I'm assuming they are the stock cats on the truck... it's got 234,500kms but still running solid. I'm running a cat back kit with a Super 44 si/do
