Hondata

Update. Kpro doesn't adjust boost levels whatsoever. I'm currently have the car tuned by another tuner who can't get boost levels to change.

The only way I've had boost changes is by putting the BC on a switch that essentially turns off the BC and runs on wastegate spring pressure for my low boost ...

In case anyone comes upon this thread and wondered what the fix is:
1. I fixed the MAP sensor wires. they were quite loose. This solved the issue with no restart
2. Fuel injectors kept getting dirty/clogged. Cleaning the injectors fixed the stumble, but it would come back. Added a filter on the feed ...

TTR wrote: Wed Mar 15, 2023 6:16 am Use the ID dead times for your fuel pressure that are posted on their website to rule it out. I doubt they are the same.

I'll give it a shot, not sure it'll fix the issue, but at this point, I'll try anything.

It looks like it is running cold in the datalog as it is not going past 138F. I do not know if that is part of the problem, but it should get up to an operating temp of at least 180F.


It's been 40-50F out here, and car has a lot of coolant.

Also, to be clear, this only started happening in ...

Vehicle: Noble M400
Kpro Serial: 47206
Software: V4.5.4
ECU: 37820-PPA-A07; 2828-106215 OF15
Kmanager: V4.5.4
Fuel: E85, sensor shows E78.

Issue:
Engine will idle for 30+ minutes, no problem.
If I drive the car, I can get maybe 15-20mins of run time before the car begins to hesitate at part ...

It's whatever PLX was selling with their wideband setups. They claim "Bosch LSU4.9 oxygen sensor"

I just flushed my injectors, they seem fine.

Still curious if Kpro logs misfire events,

Vehicle: Noble M400
Kpro Serial: 47206
Software: V4.5.1
ECU: 37820-PPA-A07; 2828-106215 OF15
Kmanager: V4.5.1
I have an AEM CD7DL dash, that gets a CAN output from KPro.


What happened prior to main issue:
Been experiencing a weird hesitation that has been inconsistent -- AFRs would jump ...

Spunkster wrote: Tue Nov 09, 2021 11:53 am Can you hear the solenoid buzz when active?

Yes I can, although pretty faint.

I'm able to get different boost levels by adjusting the duty cycle. That makes me believe the BC is functioning... but, I've been wrong in the past.

Spunkster wrote: Mon Nov 08, 2021 12:46 pm How do you have it wired?

One wire to B21
One wire to 12V, via fuse (7.5a).

I have it plumbed like the attached

Vehicle: Noble M400
Kpro Serial: 47206
Software: V4
ECU: 37820-PPA-A07; 2828-106215 OF15
Kmanager: 4.4.9

Issue:
I have a switch that grounds the EPS signal, that I am using to switch between low boost and high boost. I verify that this switch is functional when datalogging and see the EPS light ...

Spunkster wrote: Tue Nov 02, 2021 9:24 am This ECU has not been prepared for use in an S2000, and a PPA ECU is not supported for use with the S2000.

This is unrelated to a S2000. I am just posting in the thread because of the low/high boost issue that the OP was discussing.

Spunkster wrote: Mon Nov 01, 2021 10:50 am That is not the serial number on the K-Pro board.

My bad, you did say kpro board.

47206.

Spunkster wrote: Mon Oct 25, 2021 9:48 am What is the serial umber on the K-Pro board inside the ECU?

Not sure which one you needed, so took a photo and attached.
But, it's a PPA ECU:
37820-PPA-A07

It's a kseries ECU.

When I flip the switch for my high boost map, the EPS light displays when I'm datalogging. So, I assume the wiring is correct