Hondata

K24a2 swapped s2000
- K-Pro serial number: 65641
- version 4.5.8.0
- ECU part number: 37820-PNF-A03 serial number: 2091-307155
- s2000 intake manifold w/stock s2000 map sensor, rywire wiring harness
- K-pro purchased last month from clm motorsports

I'm just buttoning up my K swap and the car idles but any gas at all causes it to go lean/sputter/die. When datalogging the Map reading seems "frozen", it gets an initial reading of usually around 17.5 psi and never changes. I tried it with the map sensor removed and it was around 11 psi. I swapped MAP sensors with my other S2000 and it was no different. I also checked the wiring and the ground is good, getting 5 volts power, and 1.2 volts from the signal wire which all seem to check out. In Parameters "Stock MAP Sensor" is selected which I believe should be correct. I've attached a datalog and the calibration. I'm out of ideas on what I can do next, is the ecu bad?

Have you tried the ECU on a known working vehicle?

I don't know anyone with an ECU to try. I did check the continuity with a multimeter from the sensor plug to the ECU plug and it all checked out.

You may need to discuss the issue with Rywire since the did the harness.

I ended up figuring it out. I de-pinned the wiring off of my old s2000 harness and pinned it into the Rywire harness and everything works as it should now.