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Ok thanks fellas that explains it lol im thinking of getting a bm3 tune but not stage 1 instead a stage 2. Im installing a MST CAI next week.
Next year I'll get a High flow downpipe and then do the stage 2 tune with it. I'll keep the stock exhaust (not M performance) since there's no gains to be had anyways.
It's my daily and I don't track I just drive it hard.
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