Sooo... If the DME is causing the issue, the only way to benefit from removal of 2nd Cats, Installation of an Aftermarket DP, Muffler Delete, or any other type of performance mod, you'd need a tune...
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BMW X5 35i: Boopie Exhaust & Intercooler, K&N Drop in Filter, JB3 (3+ psi)
2013 Dodge Challenger R/T: CAI, Catch Can, Custom Exhaust, Headers, 87MM Throttle Body, Diablo Custom 93 OCT Tune
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