Does anyone have any input? At around 1/2 throttle bike starts to cough and fart and almost dies. Any gear and around 3500 rpm.

 

Valve float?Bad injector?Running to lean?

 

What fuel are you running octane my Dyna is injected and has a real problem with poor fuel octane booster will be with on my next trip. Just a thought

 

Are you getting any codes??

If not, I would suspect the PC.

mud

 

There are a lot of things that can cause that. Things you can try are, remove IAC and clean thoroughly with carb cleaner approved for electronic. Sometimes the valve in them stick and will cause a lean condition.Cleaning of the throttle body while in there is advised also. Also check for vacuum leaks, exhaust leaks. If no success then a scan of what is going on is in order to diagnose the problem.

 

I use 94 octane from chevron, same gas station on about 80% of the time. As far as codes go does anyone have the link ( How to check the codes ) Thanks for the input

 

Like other have said could be lots of things but I would check out vacuum and exhaust leaks real good.

 

The code I am getting is P1356 rear cylinder no cumbustion EFI

 

The code I have is P1356 rear cylinder no cumbustion EFI

 

There you go, If you have a repair manual look that code up and perform as many tests as you can with what you have.
If you do not have the manual Pull the spark plug and check the condition of it and check for spark. If you have spark and plug is in good order then you can either check cylinder leakage with a leak down tester if you have the tool. Or pull the fuel injector and check it for spray pattern and flow.
If you have warranty left take it in and let them fix it for free.