It seems that I am getting a CEL code 43 when I am cruising, little to no boost. No codes while I am boosting. Any ideas?

 

reset your ecu or turn off your car. It will come back too, just reset again. It is the by product of runing rich/bad O2. Just a very weird problem.

 

This code really refers to the Long Term & Short Term Fuel Trim values. The ECU can only compensate by +/- 20%. It knows to compensate by looking at the O2 voltage. If the O2 is showing rich, the ECU wants to lean it back out to keep good emmisions. If the ECU hits the floor (-20%), you get the light.

So, as was said before, it IS a by-product of your O2 output.

 

Thanks, it makes perfect sense now. Time for a better O2 sensor.

 

I had the same thing happen after I installed hondata, and 440s....I reset it, and it went away.

prolly due to running REALLY rich.