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Exhaust/ECU Upgrade 997 Turbo

Engine

Vehicle Information: Year: 2008; Engine (Size, Modifications): 3.6 TT Stock ; Total Mileage: 900;

Can you please explain the connection between the exhaust and ECU parameters? That is, I'm thinking about upgrading the exhaust with hi-flow cats realizing that a significant reduction in back pressure will result and, hopefully, increase performance. I'm wondering if the stock ECU parameters need to be modified to "match" the more free flowing exhaust system? Or is there no connection between back pressure and ECU mapping? Thanks,Dave

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