Quote:
Originally Posted by jdemetry
OP's talking about passing SMOG tests and everyone is recommending getting rid of his cats. What am I missing?
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No kidding people.
Without going with a catless set up, best bang for buck is R&P (higher numerical gearing) and a tune. Only a modest power increase with the tune, but the gearing change will allow for quicker acceleration in every gear. Coupled together (gearing + tune), you will feel a significant "seat of your pants" improvement.
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Track/Airstrip: 2013 e92 M3 MW FR DCT ZCP / ESS VT2 625, MRF mid/Akra slip, StopTech BBK (573 RWHP STD @ 8,600 RPM)
Beater: 2013 WRX STi Sedan / Cobb Stg 2 / WRX wing lol