It was a nice increase in power and torque, you are able to roll on the throttle where before you would want or need to downshift to pickup speed. When I had the 904 installed it was running a little lean and had to up the jets and I also installed some better flowing exhaust. But I am pretty pleased with the power gains but I am always looking for more. I am looking for a place to get it dynoed but have not had much luck. I want to find a place that equipped with a sniffer as well. I want to try a set of Mikuni's also. Like I said it runs strong but I am always wanting a little more!
