A 2005 Harley Davidson Sportster 883 Gets Quick - S&S Horsepower Upgrade Kit
14. All that was left to do was to run the Sportster on the dyno one last time. After the install, the bike put out 48.27 hp and 44.74 lb-ft of torque. Just as S&S claimed, the bike gained more than 10 hp (13.17 hp, to be exact), a 37.52-percent increase. It's important to note that the bike peaked in horsepower at approximately 5,700 rpm, whereas during the stock run the bike peaked at about 5,100 rpm and was very jumpy as the rpm increased, with a very large dip in the 2,000-3,000-rpm range. So not only did it gain horsepower, but it now has a longer and smoother powerband.
View Related Article
|
|