Hondata

Hey thanks for the input.
I'm doing what your doing. I back up each time I tune, and always have my laptop. Just a little inconvenence.

Input would be greatly appreciated.

You may have some kind of wiring problem because you can see the battery voltage drop off, and while it does this you also see random spikes of the TPS and the map (to as much as 25psi).
Thank you, Spunkster
When the voltage is decreasing it is when my engine is running a very low RPM (323RPM) and ...

Updated tune, problem caught red handed!! Problem 2 is more potent.

FreshDA9 wrote:

d16z6_civic wrote: At this time I have it in OPEN LOOP, my PLX is standalone and not communicating with the ECU.

Yep im having issues with my PLX aswell.

It is not a PLX issue, I choose to have it in OPEN LOOP and I choose have it not communicating with the ECU.

Spunkster wrote:Part of your problem is how you have the AF/voltage tables set up in the closedloop tab. You only have it set to read an AF of 0 to 10.8.

Note taken, thank you Spunkster.
At this time I have it in OPEN LOOP, my PLX is standalone and not communicating with the ECU.

Hondata wrote:It is not in ASCII.

Gotcha, but about my problem, that would be greatly appreciated

Penny for your thoughts?

Vehicle: 92 Honda Civic EX (EH9) D16Z6

ECU: USDM P28

MODS: Hondata 4 bar MAP sensor, S300 w/ boost control socketed by HONDATA

The problem exist very intermediate, this is the only graph I could get after about 20 times of trying and failing. Finally the problem is recorded, everything is very ...