i just did an engine swap in my 89 dx hatch. i switched from a d15b2 dualpoint to a jdm d15b with a 97 y8 vtec head. converted over the wiring from dx to si for multiport and i am incountering some problems. 4 engine codes.. 10=intake air temp. 12= exhaust gas recirulation 14= Electronic Air Control and 17 = Vehicle Speed Sensor which of these are important i have no idea.

but one problem that is pissing me off is it idles at 3 grand at start up for about 30 seconds then makes some strange pop and drops to like 1200...? any suggestions or previous experences that could help me resolve these problems should be shared. hehe thanks.

forgot to mention that im using an hf ecu which is a pm8 i beleve. dunno if this could be causing problems or not but i know the redline is way to low for me.. anyone gotta chip for sale? = )