Any updates from those who have had stall issues?
Tom
Tom. First my bike is NOT the same as yours (I have a 2009 Standard) - BUT when I tried opening the secondary butterfies to 100% all the time I had EXACTLY these issues.
Happened more the hotter it was (ambient temp)
It would stall especially in slow traffic - Pull the clutch in in 1st or second and it'd just die.
Do you blip the throttle changing down gears? - I do and I believe it makes things worse, but it's so ingrained in me I cant stop.
Did once give me a bit of an issue to re-start - but just pulled under a tree and sat for 5 mins in the shade (light breeze) and it fired straight up. It was a VERY hot day - way over 45ºC. Nice lady walked across from the Hospital across the road and gave me a bottle of water - as she thought it was me overheating.
There are a couple of possible reasons imo.
The engine is still tight. Mine loosened up noticeably after 10,000kms.
The engine may therefore be running a bit hot - this is making the plenum air intake warmer than usual - at low rpm's it's maybe outside what the IAT sensor & ECU can compensate for. So the ECU's actually pumping too much fuel in imo. Flooding basically. This I've seen on other cars and bikes. Ford Fiesta XR2's in the late '80's were infamous for this.
Whilst open secondaries sounds great - ime it affects low speed fuelling negatively. Especially if ambient temperatures are high. I've now actually closed mine down further than Triumph did in low gears. The problem went away and never returned. Why does it work? - no idea. I have theories but they're just that.
There seem to be a few of these issues being reported on 2013 Roadsters - So either it's a bad batch of looms (possible) or it's the new tune/fuel map. Would be interesting to let one of the R3-Dyno-Gods take a look.