Quote:
Originally Posted by GTM_Challenge
Challenge F30 335 Dyno Results for our HFC Downpipe combined with our Sports Catback Exhaust. We finally had a chance to get our F30 335 on the dyno again Friday and saw some great results even with the stock ECU. The car put down peak TQ gains of 30 ft lbs. with a solid 20-25 ft lbs. gain across majority of the powerband. Horsepower gains were 20-23hp peak and between 12-20 hp gains across most of the powerband. This means great usable power and gains at every RPM. 
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Hello,
Do you have a dyno for the catless downpipes with the exhaust??