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Discussion Starter #1
I recently purchased a 2003 mean streak Vulcan 1500. I’m having high idle and backfire, a popping sound. It has a hyper charger . Tried a tune up but problems still exist. I know very little about repairing so and information is greatly appreciated
 

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hmmm, I'd check for a vacuum leak 1st off, possibly a hose left open from the hypercharger install.

2nd I'd suspect the hypercharger itself.
read this: Resonant Air boxes: Theory and Applications

Also pull the hypercharger, open the throttle all the way and check for carbon build-up on the back side of the throttle butterflys. get some throttlebody cleaner etc,,, Had to clean my Nomad regularly.
 

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Discussion Starter #3
hmmm, I'd check for a vacuum leak 1st off, possibly a hose left open from the hypercharger install.

2nd I'd suspect the hypercharger itself.
read this: Resonant Air boxes: Theory and Applications

Also pull the hypercharger, open the throttle all the way and check for carbon build-up on the back side of the throttle butterflys. get some throttlebody cleaner etc,,, Had to clean my Nomad regularly.
Thank you sir I’ll definitely try this
 
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