Hi my 1200c back fires when i close the throttle is this a proplem or just the norm

 

Just read your post. Backfire is always a problem. But how much a problem is a matter of what is causing it to backfire. I'd take the bike, if you haven't already, to a competent mech.

 

Usually the back fire on the HD due to the air/fuel mixture at 0 throttle needing to be adjusted. On bikes with EFI and running a PC III adding fuel at the 0 throttle positions has got rid of backfire in the decell zero throttle position.

 

Thanks for the info will take bike and get it checked out