Loss of power after upgrading exhaust
I have changed the exhaust and upgraded to a giannelli system. However the bike is backfiring and loosing power whilst travelling. What can I do to fix this problem.
Motorcycles - Aprilia - Heretic C - 2011 Aprilia SR 50 R Factory
Answers & Comments
I'd say the loss of power is due to low back pressure, motorcycle engines especially 2stroke rely on back pressure for performance, backfiring may be due to unburnt fuel igniting in the exhaust or your fuel balance is too rich, hope that helped!