Backfire

[Bpenrod]

i need assistance on finding the cause of the backfire. i installed an athena 500cc big bore kit and now my bike backfires on the deceleration. Any clues as to why this might be happening? mapping? value gap? please help any assistance is appreciated. Thanks

[Bpenrod]

also its an 07 ltr if that helps..

[racedad70]

Re- map................lt-r450//central dot com.Remove the two backslash and there you have the forum.