p0420 thats what i thought it was i called all pro very professional and i will be going there for my tune they told me they got it all covered
I'm going to the AutoZone today to find out the code Sorry I should have already have that information
I'm very new to the WRX world But on mine I have Done the silencer delete on the stock air box I have gutted the up pipe And I have put a full...
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