re advantages of slip ons in article apr kronos arc nasa gov dschlot pioneer arc nasa gov dave schlotthauer writes quick question what are the advantages of slip on s versus your stock exhaust versus aftermarket exhaust systems i don t see many people using slip on s but they are heavily advertised and half as expensive thanks dave cost is lower than oem replacements and they weigh less also in most instances you do not have to rejet the carburetors to get a little more performance i replaced my oem canister with an ontario systems slip on the mid range performance is better but i also notice a slight stumble at k rpm after talking to kaz yoshima the developer and manufacturer of the slip on he thinks i might need larger pilot idle jets was not suppose to but maybe where i live makes a difference altitude barometric pressure anyway besides that minor glitch i like the slip on performance and the sound which is louder than stock but not loud enough to annoy folks the ontario slip on use some sort of sound baffling technique to reduce the sound at full throttle just remember every bike is a tuned system when you change the intake or exhaust characteristics beyond the allowable delta of the manufacturer you may have to change other areas to compensate like a complete change of the exhaust system header and muffler changes the exhaust characteristic to the point which re jetting is required to compensate for the new engine breathing pumping profile talk with the folks who make the slip on you intend to use and ask them if they have used it on your particular bike check with people who have the system also to see what they think about there slip on also as a last data point in sport rider s first issue did a review on a group of header and exhaust systems for the cbr f they also included as a side bar the ontario slip on the dyno showed an increase from stock of bhp at the rear wheel verses buyer beware of outrageous claimed increases in horse power it may have been true in the past but not today at cbr f allen tobias technical email convex computer corp marketing tobias convex com waterview parkway richardson tx this bike is awesome and i m fearless let s go jay gleason
