Originally Posted By Bitsobrits
Something to keep in mind with upgrades is that while the factory "locked" ECU is adaptive to a large degree, the adaptive fuel/spark maps it creates are lost when the ECU is disconnected from power i.e. the battery is disconnected. It will of course "re-learn" the current engine set up on re-connection, but that takes some time/miles.


I've used a battery disconnect when not using the car since new and never had any issue with the ECU "forgetting" the adaptive settings - either when standard, Stage 1 or, as now, KH stage 3.

I ran the standard ECU with the MMC Stage 1 and switched to a KH unlocked ECU when I had the cams upgraded.

Red Leader drive