hey there just wantn some advice i have a 99 r1 with a standard exhaust except the factory can has been cut in half with most of the guts removed my bike has always had a popping at idle thing happening does this mean the carbs need balancing? is it a problem? bike runs fine and doesnt have a miss at all the popping is at idle only and doesnt matter if its hot or cold anyone with some info would be glad to hear from you .
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