Thanks for the explanation. I'll contact the local dealer again and try to get the A2 TPS. I'll you posted.

Cheers,

FH

13 ?
 

I've just fitted stage 1 and 2 filters and a kev mod.

Checked the tps angle via the diagnostics and it's set at 13. is this not a bit low?

Not going to ****** about with it until later but what are other peoples thoughts on this...

I did experiment wth the tps too, i have bought before 10 days dna stage 1 & stage 2 with standar exhausts and no fuel mod,when i fitted them i adjusted co2 from 6 to 25,bike was feeling quite stange(lots of surge and at low rev awful),i tried then to adjust tps,i tried from 17 to 25 and the bike was handling more awful then before!then i decided to adjust the tps to 20 and co2 to 40,now the bike is very smouth with minimum surging with more power at low and mid revs!the conclusion is that you have to experiment a lot with the settings to find the perfect one:happy2:

T25 torx driver
 

:50: Hi tried to loosen throttle sensor with T25 torx bit, but noticed my driver was going to need a bit with a hole in the centre. The idea of these is to make tamper proof. :angry4: Brilliant! more like someone wants to make some money selling you an extra tool. Could not get one at halfords. Tried google which linked me to ebay and a seller called " sandingbelts ". Cost �1.40 postage though �2.10, still its only �3.50 in total not too bad.:icon_sunny:

i just knocked off the little pin in the center of the screw. Move it left -right- left a couple of time and it comes off.

Now you can use your standard Torx bit.

Ok thanks for that little tip I shall go and try it!:coolsmiley:

The base setting for the TPS is around 16 to 18.

The higher the number above 18, lets say set to 23 the more HP the motor produces but with more surging, TPS set to 13 will have reduce HP but with a smother running motor. You would need to play with the CO1 as well to find the best result once you have moved the TPS.

I have done these tests on a Dyno & can show anyone the dyno sheets if they would like to see.

Talked to my local dealer some days ago about this and he contacted the Swedish Yamaha service crew. And the answer he got from them where that you should unplugg the wire and set the TPS angle between 0.63-0.70 Ohms by mesureing on the contact pins. Preferly as close to 0.70 Ohms as possible.

I�v never read anything about this by researching the net, has anyone else?

The TPS has got 3 pins and i�v tried to measure it but my multimeter only shows one decimal and I couldnt get any readings on any pins at all.

Also, is there any recall on the TPS that referes to specific TPS number rather then the chassinumber on the bike? My 07 XTX has got the A1 TPS but when my dealer searched there database no recalls came up regarding my bike.

I�v removed the snorkel, plugged the AIS, set the Co to 23 and the TPS to 14 and my bike surges at about 30km/h in 1 and 2 gear and at 40km/h in 3 gear. Im waiting for a O2 controller from Kev.

Hi guys,

Having an aprilia pegaso with the same engine and the same problems, i was wondering in what way turning the TPS produces accurate readings of the actual opening angle.

I had a bit too low idle rpms, so I increased them by turning the idle screw. I believe my TPS reported around 16 degrees before adjusting the idle rpm. So I assume the idle rpm screw just limits the minimum opening angle. This way, it seems a bit unlogical to me how the turning of the TPS sensor wouldn't alter the mixture resulting also in a different idle rpm. So I don't know how to adjust both parameters (idle rpm and tps sensor) in a way to resolve surging and, more importantly, cutting out.

I fixed jerking and cutting of with TPS adjusting.
The TPS value was too low. It was only 14-15 at approx 1500 rpm. I put it to 16. And also increased CO2 from -4 to 10. Now I can believe that my bike can work so smooth.