| secondhand exhaust [no brand]
Hi all,i have fitted a pair of secondhand carbon exhausts [50mm] to my 748 no probs and then to the dealer for new chip and set up,at high speed the bike runs fine but at slow speeds,say 30mph the bike pops and you can feel the bang through the throttle grip,also the cans have no brand,nothing just [not for road use].
Any help would be grateful. | 
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