The wide glide played up today and wondering if anyone can shed some light on the issue.  To start it's an 07 wide glide with stage 1 Arlen Ness filter,  V&H 2into1 and an Arlen Ness Big Shot Fuel Tuner.  It's always run rough since I got it when cold.  Lately whilst warming up at idle it wants to stall but then kicks back into life.  It also started doing that if you stopped for half an hour then went to restart. After a minute though it seems to idle fine.

Today though it decided to stop and didn't want to restart. Had been riding continuos for about 2 hours then got stuck behind some cars and a tractor at about 30km/hr for a few minutes, as I pulled the clutch in to change gears it just shut down. Pulled over to the side of the road to start it back up but she'd just wind over but wouldn't fire into life. No engine or warning lights came on to indicate an issue.  After about half an hour whilst waiting for the trailer  I gave her another go and she started, although idled a bit rough. I then proceeded to ride it home which was about 75kms away. About 5km from home in 6th gear at around 110 it coughed and backed fired then continued to run fine for another km, then it did it again so I dropped back to 5th and then it ran fine until the servo which was about 2km away. I figured I was low on fuel so stopped at the servo to fill it up. When I went to restart it, it wouldn't go. It'd wind over strong but just didn't want to start. I gave it half an hour and it started again. I rode it home which took about 3 minutes as it's only a few km's from the servo, I shut it off then went to restart it but it wouldn't start, it'd just continue to wind over. 

Any ideas? I was thinking the Arlen Ness tuner may be playing so was going to ditch it to start with as it's really only a piggy back setup.  It was serviced about 5000km ago and had new plugs installed then. It's got just over 40000km on it. 

I would pull the piggy back tuner and try the ecm straight up. I would also pull the air cleaner and give the iac a good spay with carb cleaner it's the hole just before the throttle blade on top if that makes any sense. The engine should be throwing codes so it could be the arlen ness tuner.
Good luck

For the hot start problem,try pushing up on the fuel line's quick connect fitting at the tank while trying to start.

WAZ..

Just throwing it out there but check or change your fuel filter as it may be blocked. Did they change it at the service? Ya can't trust everyone.

 Thanks for the ideas, I'm on a day off tomorrow so I'll try then. So where's the fuel filter hide on these things? 

 In the tank. Disconnect batery or pull main fuse first.  Drain tank fully, leave on bike if you want. Pull wires and hoses and pull unit from tank. Better if you have a manual to follow.

Check this out. it might help.

Most likely candidate will be the add on tuner ( You've sussed that already !)

Also the easiest thing to check

Re-install the stock O2 sensors of course

 After ditching the Arlen Ness piggy back tuner I got 4 fault codes, 1st 2 were the O2 sensors but I expected that after unplugging the tuner. The other 2 codes were crank position sensor related issues. Replaced the sensor and all is good again, for now.