Hondata

I figured out what the CEL light was due to. The head has been milled and a Thin headgasket from spoon. These two factors happened to advance the timing on the exhaust cam. The reading the P28 was getting once the car ran up to 3500 RPM, was making it think the CYP wasnt lined up. I retard the ...

I have a 97 Prelude SH, i have done quite a bit of work to, i am running N/A. I took the car down to get the Hondata P28 w/OBDII adapter on it, installed and tuned. On the first run on the dyno with the new ECU installed, the CEL came on and registered a code 9, CYP sensor. I couldnt do any tuning ...