i was wondering, i have both ecu's and they are both for a 88-91 civic and or CRX i could swear i pulled the PM9 from a 90 integra but i am unsure after i did further research so now i am at a point of i dont know. is the PM9 the si ecu?

 

Anyone?

 

PM8 ECU is for 88-91 CRX HF D15B6 - MPFI
PM9 ECU is for 88-91 Civic STD D15B1 4-speed - DPFI

 

thanks... i ahve just done about an hour of searching and reading came up with the same conclusion