Hondata

Problem solved!

Got a new s300 hondata ecu and car started up and runs like normal. I'm really happy!

I guess the old one went bad somehow and wasn't functioning properly. I might have to send it to hondata for them to look at.

What you are describing is called remote tuning. Many tuners offer this. These forums are fairly inactive other than Hondata staff and a few of us die-hard old-timers who prefer forums over FB. You may have better luck lining up a remote tuning session by googling for tuners familiar with Hondata ...

The log with the "autozone" MAP sensor shows either your calibration was not set up correct or the sensor was bad. At the start of the log (~1 second) your RPM shows 97 (I assume you're cranking) but your MAP is showing 21.1 psi. That's probably why it wouldn't run with that sensor.

The log with ...

Have you verified them mechanical timing with the cam gears?


Yes I had my mechanic checked it yesterday and he said the timing is fine. He adjusted the distributor timing and still not running right.

I might need to take it back to the tuner but available appointments are couple months out ...

Any chance you can post a log of it (barely) running and your calibration?

When you put in the AutoZone MAP sensor, I'm assuming you changed the settings in the tune back to a stock MAP, right? How about when you went back to the new Hondata 4-bar?

Have you verified your mechanical timing ...

1997 civic em1 built d16y8 tuned 215whp @ 8 psi on 93
aem 340lph + 410cc rdx injectors
hondata p28-obd2b

Car was running great for a month since I bought it and then I was driving one day and suddenly the car shuts off... then a crank no start. Towed it home, troubleshooted it, I kept cranking it ...