15. We did a dyno run with the swapmeet pipes just for fun, and achieved 68.02 hp and 72.23 lb-ft of torque. The air/fuel ratio (blue line) wasn't quite where Brad wanted it. Through the years we've done multiple dynos with a stock Twin Cam 88 and have found stock horsepower to be in the high 50s, with lb-ft of torque in the high 60s. After installing the new components, loading the base map, and simply taking the bike for a short spin, the bike reached 73 hp and 75.3 lb-ft of torque, which compared to stock is a substantial horsepower and torque gain. The air/fuel ratio was right where it should have been, around 13.7:1, and stayed smooth throughout the rpm range.
15. We did a dyno run with the swapmeet pipes just for fun, and achieved 68.02 hp and 72.