replacing pre-cats?
#1
replacing pre-cats?
I'm new to Audi. Have to replace pre-cats that bolt onto my turbos. The expensive ones. Figured I can do this instead for a very similar price.
Will replacing the stock pre-cat and rear cat with downpiping, catpipes, and test pipes still let me pass emissions? And how much performance will this give me if I kept stock mufflers backwards on. I'm not looking to spend more than 1,500 on parts.
Will replacing the stock pre-cat and rear cat with downpiping, catpipes, and test pipes still let me pass emissions? And how much performance will this give me if I kept stock mufflers backwards on. I'm not looking to spend more than 1,500 on parts.
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