Yup, it wouldn't rev past ~3500rpm with the p28 code.jangz wrote:
your car was throwing up CEL lights did you ever go into Limp Mode?
I don't think it would make a problem as i didn't touch it at first when i converted to obd1.jangz wrote:In my newbie corner post I was discuss the idea of timing, I haven't touched it. Could it be that something needs to be adjusted as the OBD1 ECU is timed differently? and could that also be a factor to this who issue.
To rule out possible things that could be causing the problem start with diagnosing the fault code for MAP sensor. If your not getting this code with stock ECU but with p28 ECU, then check continuity in your loom, harness and ECU pin using socket diagrams. With the p28 connected use a multimeter to check pins of MAP sensor while it's connected. It's a 3-wire sensor with one pin being ground, one 5volts supply and one being signal to the ECU which is analogue 0-5v.
If continuity is ok from the ECU pin to the sensor and you are still getting fault code for MAP sensor than something is wrong with the ECU.
After checking this and your sure there is something wrong with the ECU or the .bin file, look for a demon RTP or ostrich emulator as it costs nearly the same as a chip burner while it gives the advantage of realtime tuning.
