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OP,
So did you not know this prior to getting your catless DPs installed? What were you expecting? Lol.....sigh.
If it were me, I would just put back on the OEM exhaust, sell the catless exhaust and get an axle back exhaust.
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'08 AW E90 335i
PROcede V5 | BMS DCI | RR DPs | ETS FMIC | FORGE DVs | Stett CP | Vanguard | PSS10 |