Look, the AA axle-back sounds completely awesome, is a little boomy on cold starts but settles down in a minute or two (fuel mix), and is completely non-obtrusive while cruising except for some low-end resonance in the cabin between 2200-2500 rpm which wives sometimes find annoying. That said, I repeat, the AA axle-back sounds completely awesome. OK?
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M850i Vert with RaceChip
E46 M3, Euro Headers, Rasp Pipe, Kassel Tune
Alpina B8, zero performance mods
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