Red Line at Startup

Tps do fail, with limited info, trying to jump in can be a roulette game. You will have to hook up tune ecu to see voltage on tps, it has to be in .64 range at idle, if key was on when you unplugged it would throw a code.
Thank you, I'll do that. I've only had the bike for a month so far, so I'm still learning all the quirks. I appreciate you taking the time to point me in the right direction.
 

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This is the connector that I disconnected while trying to figure out the cause.
Disconnecting that sensor's input to the EFI sets voltage at 0. Using TuneECU the OBD reader is connected to the ECU, you'll see what the ECU is getting as input, the sensor could be putting out .6 volts to your multimeter, but that's meaningless if the ECU is reading 0. You need to read what the ECU is seeing.
 
While tps is a good possibility for high revs and the tps sensor is made so it will not jam the throttle I am leaning towards the gismo (do not have the foggiest idea what it is called) is stuck. Now the gismo is located on the front and the idle adjustment controls the primary throttle plates. Someone might post a picture.
Anyway this gismo is attached to primary plates an can stick and red line the motor so where the cables go on th bottom you spray that area real good with wd40 and wot and let it fly shut.
Do this several times. And it should work
Hth herman.
 
While tps is a good possibility for high revs and the tps sensor is made so it will not jam the throttle I am leaning towards the gismo (do not have the foggiest idea what it is called) is stuck. Now the gismo is located on the front and the idle adjustment controls the primary throttle plates. Someone might post a picture.
Anyway this gismo is attached to primary plates an can stick and red line the motor so where the cables go on th bottom you spray that area real good with wd40 and wot and let it fly shut.
Do this several times. And it should work
Hth herman.
Turbo brings up a good point, where the throttle cables come in make sure those linkages are well lubricated and clean (and lube the throttle cables while you're at it). The idle stepper motor can also be your problem, that can be tested with TuneECU as well. If the primary TPS is correctly set at .6 Volts when the idle stepper is fully open it should read .72 (or .12 volts above primary TPS voltage).
 
While tps is a good possibility for high revs and the tps sensor is made so it will not jam the throttle I am leaning towards the gismo (do not have the foggiest idea what it is called) is stuck. Now the gismo is located on the front and the idle adjustment controls the primary throttle plates. Someone might post a picture.
Anyway this gismo is attached to primary plates an can stick and red line the motor so where the cables go on th bottom you spray that area real good with wd40 and wot and let it fly shut.
Do this several times. And it should work
Hth herman.
This ended up working. Visibly there's almost no difference between the throttle plate position, but I felt an extra click as it was closing as if it was getting past an obstacle. Now it starts at a reasonable idle. I still think that I want to take a look at the TuneECU numbers before I do anything else, but I can at least start the bike without it trying to explode itself. I'm rather amazed that it will red-line with such a little opening in the throttle plates. Thanks again everyone for your time and knowledge.
 
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