Really strange, when it's cold in the morning I get loud pops out of exaust. Understandably, but after it warms up is when it gets strange! If I hit a bump in the road it also pops loud from exaust. And at highway speeds 65 mph and above, if throttle is kept steady it pops.
Could a low float level be the cause? I haven't yet tried to diagnosis in any depth, ecept apply the choke and it made no differance. No idea of jet sizes and must make air mixture screw adjustable.
Any help would be great
Mike

The pop when you hit bumps could be one of the side stand switch shutting off the ignition circuit......or a loose wire somewhere.  When you hit a bump the ignition is momentarily turned off/shorted out.

madmikesmech wrote on 08/01/17 at 08:39:20:

Well, "drag pipe,no baffles" will make any diagnostics difficult.
No baffles allows fresh air to mix in easily and any left over fuel will pop.
choke is not really a choke, it is fuel enricher and said to only work at low throttle.
You need to drop the bowl and check the jet sizes, otherwise we're just popping in the dark.

I doubt it pops because of a bump in the road,what your feeling is the bike missing because it's going super lean ,it then pushs the unburnt fuel into the hot exhaust pipe to pop. you can't except to change to a straight pipe without a rejet of the carb. because it runs super lean.

batman wrote on 08/01/17 at 20:17:29:


Understood Batman. Thanks, but this is how I picked the bike up, as it is, I thought the correct jetting changes were made. I must pull the carb to do something to allow the mixture screw to be adjusted any how, so I'll pull the float bowl and get into finding out what jet ting is at that time. The P.O. removed the "cap" from the mixture screw, BUT,some how damaged the slot a screwdriver fits into for adjustment! The pipe was already installed when I purchased the bike.
All I've done is put bags and a rear tire on it, the rest of the mods were PRE my ownership. Thank full you all are knowledge and willing to help me figure it all out!