cut secondary cats on magnaflow full exhaust??
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My Ride: 08 528i full m5 body
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hey guys i have magnaflow full catback to quad exhaust it sounds like sex but i was thinking of just deleting the secondary cats to give it a little more rumble what do you think?
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My Ride: 09 550i 6sp M-Tech. 18mm spacers rear, 8mm front. Dinan intake and Stage 2 tune. Tinted tails, M5 OEM lip spoiler.
08 Z4 3.0si Black on Black with Beige top. Removable hardtop. (Hers)
06 Volvo S60R Heavily Modded!! Gone and missed.
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From what I've read on he many dual exhaust threads, youre going to end up with an annoying drone.
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