Originally posted by 6GenCivic
So would I need to do anything else to prepare for that high of compression, or can I run 12:1 pistons on my stock motor and ECU?
i cant say for sure. depending on the knock sensor yes. bu it may retard the timing. theres no point in running the stock ecu if your gona run 12:1 comp anyways. your gona need new ignition and fuel maps anyways. chiped p28 would be fine though,