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Bibio · 23-01-16, 06:42 PM

remember! on single spark engines you need to adjust the tick over while doing the adjustment to keep it at around 1300rpm. on twin spark you just adjust and the auto idle sorts itself out.

you wont feel the benefit of the TPS adjustment in dry or normal riding but you will feel the difference when doing slow manoeuvres and slight throttle control in wet/slippy conditions.

the secret is in the name 'Throttle Position Sensor', the closer you can get the adjustment to the on/off throttle position the better and smoother the engine behaves.

my reckoning as to why it works is that there are two maps in the ECU, one is for idle/partial throttle and the other is for medium/full throttle position which are dependant on the angle of the TPS. the problem is that the partial and medium throttle position is around the slow speed manoeuvre rev range so you are always going between the two maps. moving the angle of the TPS lower tells the ECU that you are using the med/full map with less throttle movement.

23-01-16, 06:42 PM	#341
Bibio Member Mega Poster Join Date: Jul 2008 Location: here as devil's advocate Posts: 11,540	Re: TPS Adjustment Step-by-Step Pictorial Guide remember! on single spark engines you need to adjust the tick over while doing the adjustment to keep it at around 1300rpm. on twin spark you just adjust and the auto idle sorts itself out. you wont feel the benefit of the TPS adjustment in dry or normal riding but you will feel the difference when doing slow manoeuvres and slight throttle control in wet/slippy conditions. the secret is in the name 'Throttle Position Sensor', the closer you can get the adjustment to the on/off throttle position the better and smoother the engine behaves. my reckoning as to why it works is that there are two maps in the ECU, one is for idle/partial throttle and the other is for medium/full throttle position which are dependant on the angle of the TPS. the problem is that the partial and medium throttle position is around the slow speed manoeuvre rev range so you are always going between the two maps. moving the angle of the TPS lower tells the ECU that you are using the med/full map with less throttle movement.