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All I can say it with my few years' flawless experience with BMS Power Box for the 325i E90, I would suggest BMS as they have a proven track record over years with great tuning products for BMWs, very few people having issues with.
I'm in for Stage 1 as well and it's good to learn (thanks Mike) that Stage 2 is under development now.
Speaking of Mike, he is very often posting to this entire website, updating us on products and answering/clarifying queries on behalf of BMS. Perhaps AFE's spokesperson could add to the thread.
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328i M-Sport, Estoril Blue, Carbon XP 35 Tint, front heated seats, black Dakota, Sports Suspension, Anthracite Headliner, HUD, Pro Nav, Sunroof, hk 600w, Bi-Xenon, 19" 403M wheels, Reversing Camera, DAB+, Xenon, BT Ext Connect, MST turbo intake pipe, MST Cold Air Intake, JB4 on Map 2 with Catless DP produces awesome performance in Sport.
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