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I talked with a tuner today about their program.
He said that they have returned 530-545 WHP off of every M5 or M6 that they have dynoed prior to tuning.
Has anyone here dynoed prior to mods to see if this is a fair number?
Has anyone on here used ECU Tuning Group?
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2013 F13 ///M6 Coupe - Singapore Grey
20" ADV.1 5.0 MV1SL with Pirelli Pzero's
Custom Painted Grill, side markers and tinted front reflectors, Dinan Stage 1.
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