Can no exhaust pipe on a 01 r1 cause it stutter at high speeds and backfire

SOURCE: mess up

Your bike is most likely running a little lean on the idle/slow-speed circuit. The jets might need a cleaning, or you've got a slight air leak somewhere. Other possibilities ... - Idle mix screw out of adjustment (Probably not as it's sealed and 'supposed to be' tamper free) - Carbs slightly out of synch

SOURCE: 2005 VSTAR 1100 Silverado Backfire

Are you running on original pipes or have you installed aftermarket pipes that are louder ?? I had the same problem with aftermarket pipes and come to find out my carbs were not jetted the way they were supposed to have been done when I installed the pipes.Also there are two chrome tubes starting at the front of the engine going under the seat towards the rear--- there is a rubber hose connection connecting each side .You should disconnect these hoses and bypass the tubes-- in other words use one hose to connect the front two tubes together and the other to connect the rear tubes together , its some sort of early emmission thing that will cause some backfire

SOURCE: 2007 650 yamaha vstar popping through the rear cylinder exhaust

First off did you buy it new? Second has it gone through its break in tune up yet?Did you do the re jeting? My guess is it was re jeted wrong & neeeds to be re jeted again or could also need more air(upgraded air kit) or a tfi or power comand fuel mod.My bike also poped untill I did the air & fuel upgrades & them upgrades will also give you a much needed house power needed for this rig.


Bring it to a shop & have it looked at.......


Good luck

SOURCE: HD 89 FLSTC misfires using turn signals..

I definately would think it is something within the charging system. Here is a few tests you can run. First with the bike off take a multimeter in VDC check the battery voltage at the battery. (should be at 12.5 VDC) If not first charge the battery. Second start the bike, with it running and multimeter again in VDC check voltage at the battery while slowly opening the throttle(should see between 13.2 and 14.5 VDC at the battery) If you have more then 15 VDC then you have a bad voltage regulator. If you have less then battery voltage from the first test. You may have a bad stator and/or a bad voltage regulator. Third test with bike turned off and multimeter in continuity. Place one meter lead into either of the two holes for your stator lead(coming out of the front of the primary drive case) the other meter lead to any good ground. If you get a tone or continuity then you have a grounded stator, and it has to be replaced before proceding any further with charging system tests. If you do NOT have continuity then check the wires from the voltage regulator running back to the battery for any breaks or chaffing, if none are found. I would have the battery load tested as well. It also sounds like you could have a short in the turn signal wiring, maybe check the wiring inside the rear fender for chaffing as well. I personally think you'll find its an issue with the charging system itself though. Good luck and please let me know what you find out.

SOURCE: 89 FLSTC misfires using turn signals & brights

voltage regulator will cause that problem.