R33 and MR Clean - Question for you guys on the ER catless downpipe. Did it cause any error codes to come up after installation? Also since its catless was the exhaust fumes more noticeable from inside the car? Heard that it could be. I have had suggestions of getting a catted downpipe instead. Not sure about how that effects the exhaust flow and hp.
Has anyone out there heard of AR design downpipes? Wanted to get input on that one as well.
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