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  1. 2010-13 Mazdaspeed 3 Engine and Performance
    Im about to bite the bullet and order my DP, FP internals and boost solenoid. After the install i will be tossing the speed onto a trailer and taking it to COBB for a dyno tune. I just wanted the final suggestions before ordering my parts.... CPE catless DP or CS 80mm catted pipe CS FP...