Hi, i have a 1989 Civic EF DX and u guys know how it doesnt come with an RPM. well i have a si gauge cluster that fits exactly. The problem is its being really retarded. The check engine, oil, door, and break are always on. i mean ALWAYS on even when the car is off and the key isnt there. Also the fuel stays on E and the temp stays in the middle then goes to hot ROFL but its not. the connection is all good. what do you guys think? let me know. thank you

 

yah u need the pm6 ecu.. i tried what you said b4 and it didnt work at all. u can probably get a pm6 ecu cheap enough(COMES FROM ANY 88-91 CIVIC SI OR CRX.
good luck.

 

oh and make sure u get one out of a standard car if urs is standard and if not get the automatic one. just make sure its out of an si modle

 

looks like im going to the junk yard. ^_^ thanks alot