Running lean after supercharger and tune

With the O2 sensor unchecked you don't have to unplug it. When you uncheck O2 you need save tune & re flash ecu.
 

Ok first untick the O2 sensor box and save/load. Can leave O2 sensor connected and filling the hole in the harness and exhaust just being ignored by the ECU.
Reset adaptives.
How does it run then?

If still bad then let's talk about the MAP and TPS.

Nothing to do with the problem but that idle is too low btw (oil pessure at idle is not great, even worse with low idle), even the Triumph factory spec is too imo, 900-950rpm better.
 
Plus one on the idle speed. Back in the day Tune boy tunes for the original TTS kits had the map sensor turned off and one unplugged it. If the sensor is active and sees boost the bike will run crap. There may be a Tune ECU tune with the map off, I'm not sure.? I have never been able to get any of the blow off valves to work consistently or reliably, so I just remove them. Others may have other ideas.
 
If it's possible to swap the stock map to a higher rated sensor i would be very interested in details.
 
It’s still connected, and I believe all the right tubes go to the correct throttle bodies. The spare vacuum ports are plugged except one which routes to the blowoff valve. Could be worth a double check.
MAP sensor plugged in but no vaccum line. (I balanced throttle bodies the old way with vacuum gauges.)
F to L switch over set to zero so it never looks for any information from the map sensor except it is powered up. I ran the tree vacuum lines to the blow off valve. You should hear blow off valve flutter at idle.
Idle stepper motor control plugged in and Full ISCV reset. Idle worked fine no monkeying around with any throttle screw as it screws up Idle control. If the bike can't control its Idle then the 10 tune people true is useless as SOMETHING FULL OF COLD WATER You can figure out what the something is !!!
The blow off valve does get dirty and sticks or is slow reacting which messes with idle Fuel ratios recording erratic. As the air flow is jumpy.
Check coil low tension leads is always a good idea.

Sorry just thinking out loud
 
Last edited:
If it's possible to swap the stock map to a higher rated sensor i would be very interested in details.

It can be done. I run a 2.5 bar BMW MAP sensor, made up an adaptor plug to connect it to Triumph harness so nice and clean.
Also the plug has 2 sets of wire, one to run to the Triumph harness (ECU) and the other goes to the Power Commander.
Due to going from the stock 1.x bar sensor to this 2.5 bar one, but not being able to change the pressure transduction in the ECU (it's configured for the 1 bar map sensor), what was your idle MAP of say 640hPa will become like 310hPa.
But no big deal , you just remap to suit. You can use a PCV to tune by pressure instead of throttle position. Autotune works here too but it can go a bit mad too so needs human supervision.

was going to write up a how to on it but didn't get to it yet..


.
 
Last edited: