If you want reliable power go with bm3 stage 1 by protuning freaks. Im currently stage 2 fbo and love every minute of it. Join the BM3 enthusiasts group on facebook for more info when you get the chance
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F30 328i 6mt
Injen, ER, BM3, Solowerks, IND, BMS, BBS
E46 M3 smg2
Bimmerworld, H
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