Thread: MBRP Exhaust on an A8
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Old 12-04-2018, 04:57 PM   #5
Josedlc98
 
Drives: 6th gen camaro ss
Join Date: Oct 2018
Location: Colorado
Posts: 46
if you get catback , leave the afm valves plugged in . Youll still go into v4 mode . Axelback you wont need a tune
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