2004 Rockett

Okay Bike died, stalling backfire .... I replaced intank filter which was plugged. Bike ran fine, I ended up putting in fuel injector cleaner and bike is idling rough missing and breaking up through rpm range. I have a PCIII and jardines. By-passed PCIII no difference in running, a real lot of backfiring through exhaust off throttle. Pulled plugs and they look good. I don't think the injector clean would cause this, is it possible one the coil packs is going south. Bike has 4000 miles. TPS seemed fine Thanks

Until you completely run the tank with injector cleaner out, it very well could run poorly. You can either live with the way it's running now and try to use all the fuel, or keep adding fresh gas to "thin" out the cleaner whenever it will hold more. If it isn't dying, run the tank out ... if it barely runs, get some fresh fuel in there.