Mgflasher is awesome for b48! I have 184 hp 20i version with st2 tune and that’s around 330 hp confirmed with logs and dragy tests. St1 would be good for 300 hp and safe at the same time! Also MGFlasher have some really nice and unique features and it’s cheaper than bm3.
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2018 340ix AWD B58 8AT | MGflasher ST1 |
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