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bike is a sportster 48 with vance and hine short shots. Standard baffle. Fp3 map. If i shut the bike off to get fuel and start it up a few mins later I get a loud pop (kinda like a backfire) on startup. Only does it when hot and been shut down for a few min and started again. Normal for these pipes?
 

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bike is a sportster 48 with vance and hine short shots. Standard baffle. Fp3 map. If i shut the bike off to get fuel and start it up a few mins later I get a loud pop (kinda like a backfire) on startup. Only does it when hot and been shut down for a few min and started again. Normal for these pipes?
Fp3 has issues.. but i dont think it's yours

Also a single pop during hot start is not unusual... when you sit down some fuel may sit in the cylinder or exhaust.. during start that vapor does kaboom with an ignition source.
 
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