Need to speed up A Viper 90
Been browsing around trying to find out some suggestions on my sons 2003 viper 90. Seems to be a little less responsive than his neighbors 2004. I pulled the pipe to see if it had a restrictor and cleaned the filter but didn't really do anything. I read today that I can cut the Rev limit wire but that seems like it may help a little on the top. I have also seen somethings on pipes that some say the stock is about is good as it gets then others say to get it. Maybe some adjusting on the carb. I would like to beef it up a little. any suggestions would be apprecitated.