Well I would like to know how much this Brullen Y pipe costs, and how long until its availible, and I notice people have concerns about optimizing flow; If you still have the precats on the car you will only be able to get as much flow as to what comes out of those precats. Am i wrong?
Also another question i had was, If I were to get the MSDS headers, would I pass DEQ? I live In oregon?

Any info, please reply

Thank you