Is my TPS and ISCV set right? Video - TuneECU

[Moogs]

This is the mechanical result of running through the "Adjust ISCV" option in the program. This is mainly to verify that the resulting mechanical operation is correct after swapping my throttle body assembly.


First I made sure the TPS was set properly at .60 with the arm resting on the adjuster screw.


I also made sure there was .5mm clearance between the arm and the roller before I started.

The I started "Adjust ISCV" in the tests page. This asked to verify voltage of TPS, which was true at .60v. This is what was also reported in the diagnostics page.

Then i checked clearance and it was still a good .5mm

Then I double clicked on "Adjust ISCV" and the voltage rose to .75. It toggled back and forth, the arm, between .60 and .75. I then double clicked "Adjust ISCV" again.

Then 15 seconds later all was done however the arm never came to rest on the screw. It rests slightly above the screw here.

When I run the process again it backs off. Perhaps it's slightly elevated when cold and settles down when warm? That is the only thing I can think of. Just wanted to check

You Tube

You Tube

[sussurf]

You got it spot on.

[champ87]

Originally Posted by Moogs

....however the arm never came to rest on the screw. It rests slightly above the screw here.

It's not supposed to. With ignition on the stepper holds the throttles slightly open for starting and with the engine running it adjusts to maintain idle speed. The only time the arm rests on the screw is with the ignition off or the first click of "Adjust ISCV" in TuneECU.

[oldndumb]

Seems to me that the video ought to be incorporated into Champ's most excellent tutorial.

[DEcosse]

I thought same - with kind permission of both I will put it there?

[champ87]

Originally Posted by DEcosse

I thought same - with kind permission of both I will put it there?

No problem from me - but then it's not my video.

[Moogs]

You guys can do whatever you like. Bike runs really well now. I am just the kind of guy that needs to see things sometimes. The manual didn't explain this part very well. Thank you for the write up Champ. It really helped a lot.

Christian

[champ87]

Originally Posted by oldndumb

Seems to me that the video ought to be incorporated into Champ's most excellent tutorial.

For those who haven't come across the tutorial it's located in the ECM and FI Tuning forum as a sticky titled TuneECU TPS and ISC Stepper Adjustment. It's been there a while and now it's supplemented with moogs video to help you visuallize what's going on.

The write up was based on my 1050 Sprint so it's good for Keihin equipped Speed Triples as well. A shameless plug for my own post but hey, I put a lot of work into it so if more folks benefit the more it was worth it.