we increased exhaust flow from the factory 270 cfm to 299 cfm on our 2004580 exhaust kit, a 10% increase, tested at 10" of water.
You're Done !!
Heartthrob Exhaust Inc.
60819 U.S. Hwy. 12 West
Litchfield, MN 55355
P: 320-693-0222
F: 320-693-8964
email: mike@heartthrobexhaust.com