okay. so i have a pm6 ecu from my 89 civic si. running a sohc zc with lsd tranny. speed limited to 112. i understand that the pg9 from the integra is good to put in when running a zc. first could someone explain why this is so. just want to completely understand..i think it runs fuel differently and adjusts the rpm's to power? i've heard its best to run the pm7 from the jdm zc..but i've read that its for the dohc zc. will it matter with my sohc. ALSO read that the PR2 is from the 88-91 zc euro. just says euro though. so what would be the best setup for me?
thanks, mike

 

But you are running a SOHC ZC which is the same thing in practicality as the D16A6; you could use the PG9 but you would be running really really rich.