Hondata

Spunkster wrote: Mon Nov 20, 2023 11:24 am This is a PRA calibraiton and cannot use a factory wideband and only works with a narrowband o2 sensor. The value in question is not used.

Great information!

Can you add this information to the help file?

Thank you!!
Kenji

Why the idle lambda is always set to 7.35? I changed to a different value (14.7), but it automatically goes back to 7.35.
How can I set it to 14.7? Is this a bug?

Version 4.5.6.0

I found a solution!

It may be the wrong way, but it works for me!

1. I adjusted the low cam table up to 9000 RPM and tested. The low cam also has the same issue.
2. I also enabled a closed loop with an external wideband. No impact.
3. For "Shits and giggles" I jacked up the "overrun cutoff min ...

Well, This Kpro is new. I upgraded to V4 last year, and just installed in this spring.

The low cam has no issue, so it is not a mechanical issue. If the car has mechanical issue, the INJ stops responding on both low and high cam.

I do not have other s2000 with itb to test.
Should I send back the ...

Thank you very much for the confirmation!

I tried as attached, but it did not resolve the issue. This happens only with the high cam pull. (the low cam pull has no issue)
After the high cam pull, Kpro stays in the overrun cutoff, and INJ does not respond to TPS. Once the RPM became 0, INJ responds ...

After a pull on high cam, TPS and INJ become 0% (overrun cutoff), then INJ no longer responds to TPS and engine shuts off.

What causes this?

Thanks for your help!

Thank you very much for the tip!

I hope the attached image is the one you are suggesting. Can I get conformation?
Other ITB examples are not Alpha-N.

Why does the TPS go up to 313% (not around 100%)?

Thank you!!

I adjusted parameter table to scale from 0% to 100%. (by adjusting MAP value throttle fully open)

The engine still shuts off after high cam pull. After the pull, throttle make zero impact to the injector pulse.

Thank you very much!

What are the conditions that makes injector to stop responding?

Thank you very much for the help!

Thank you very much for the help!

I do not have the Alpha-N calibration built into the software. Can you share the calibration?

Thank you!!

Is the MAP data log value actual sensor reading or calculated value with Alpha-N?
Data log MAP value looks like a calculated value from the TPS.

(if the data log is the calculated value), How can I check MAP sensor operation with Alpha-N?

Thanks!

Yes, a MAP sensor is connected and reading vacuum through a vacuum block.

I have not set the MAP value for fully closed and open. Can you explain how to determine the value?
Can I use the data log value for idle reading for fully closed? and WOT value for fully open?

Thank you very much for the ...

The engine also shut off with 2nd gear after a pull.

Played around with" over run cutoff (high cam)" between 15 to 32 (over 3000 rpm). It did not stop the shut off.

I am street tuning my URGE Design ITB (Apha-N) set up. After I pull 6K RPM in high cam, the engine shuts off. It happened on 3rd, 4th and 5th gear pull.

The Datalog shows, right after TPS is reduced at 6112 RPM, AFR gets rich (Datalog at 2:23) then the engine shuts off. I have to crank to restart ...