Hondata

I had a similar issue before when using a really old and kind of slow laptop, problem went away with a newer laptop.

Your atmospheric pressure reads way low, are you on high altitude?
I'm not sure if the ecu compensates for this and causes VTEC to switch on "earlier" but hopefully the Hondata guys will confirm.

You didn't see this? https://www.hondata.com/news/blogart94 California has ordered a shutdown of businesses. Hondata is operating with minimal staff and will shut down in the near future. During this time existing orders will be processed and phone support will not be available. Technical support wi...

The gauge and the kpro board is reading the same serial data from the sm-afr module.
If the gauge works by it's own and stops working when the kpro is connected it seems like it could be some wiring problem.
Unless it's the kpro board itself that is the problem but that seems a bit strange?

I+ and G on the kpro board connects to TX on the PLX module.

Digital input works great as well, I've been running that for years now.

You could always use the digital input instead (TTL serial input).
No more problems with voltage offset and if you ad more PLX sensors there is no added wiring needed.

Are you looking at the dash or in a log?
The dash can sometimes be a bit off, especially in the higher rpm's.

With oil temp you mean the stock coolant temp on the dash?
If it's a standard PRB ecu for a k-series car I don't think that will work with the dash, at least not the temp gauge.
There is a special extra circuit board on the S2000 specific kpro.

I would use a multimeter and check that the PLX box is actually outputting any signal.

Did you ad the settings for the analog 0 channel like explained here?
https://www.hondata.com/help/kmanager/i ... inputs.htm

You are correct.
I can recommend the PLX one, I have used one of those for a few years now and it's working great.
Using the digital connection only.

Thanks for the tip on trimming the logs. I made it much smaller now and it should be pretty clear now if you check what is happening at 1:02 1:20 1:31 mark Please check the behavior on the "rev limit sensor" as well, every time the injectors shut off it seems the rev limiter is ON. And yes...

I know, but I have a very effective vacuum block which you could probably see in the log so please disregard this.
What is the minimum delay for the fuel overrun cutoff? Is half a second normal or should it be lower?
Also if you could answer my question about the rev limit sensor that would be great.

Because MAP based works pretty good and was much easier to tune.
Would an alpha-n tune make a difference regarding this specific issue?