Hondata

Switched the ground to a chassis ground near the OBD2 port, adjusted the table as suggested by PLX. Everything matches up fine in all RPMs now.

Thanks spunkster for the quick accurate response =)

everything is wired at the jumper harness like it said it should be at the PLX instructions.

I'm running a H22a4 with a P28 hondata ECU with a M series PLX wideband.

I notice that in the higher RPM's my gauge will read 12.6-12.8 but it gets datalogged at 13.1

but in the lower RPMs everything matches up fine?

the wideband is ground at the ECU jumper harness and I have the capitors from ...

I'm going to be installing my PLX M300 in my prelude running a P28 ECU with Hondata s300

I plan on taping the OBD2-OBD1 wiring harness I have connected to the ECU.

I've looked over a few ECU pin outs and I can't find which pin to tap into for the power. None are listed as a 12v ignition power ...

The car was dyno tuned at a shop but, I started to find little things that needed to be improved like the fuel compensations were off as well as on the last run the tuner opened my IAB but I don't believe he retuned for it so I did that on my own as well.

Anyway somethings I have noticed is this ...

ok I have a very wierd problem I can't figure out.

I have an H22a4 in BB6 basically stock expect a few minor bolt ons

now heres the problems I went thru the settings to set the idle speed and when I plug in the IACV and clear the code my idle only goes up to 750 then slowly climbs it's way to 800 ...