At idle, this exhaust produces 86.5 dbs and maxes out at 100.2 dbs at higher RPM's.
As tested on a Mustang all wheel drive dyno, the Agency Power catback exhaust made an impressive 20 all wheel horsepower and 20ft/lbs of torque. The exhausts are available for all 2008 and up Subaru STI's.
Part Number: AP-GRB-170Sfits hatchback only
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