I have searched for hours and cannot find a for sure answer. On the Gen 3 ECM's when running in SD (MAF fail) you copy high octane table to low. But what about the Gen 4 E38 ECM? Some say that in MAF fail the high octane table still works, or do I still copy high to low? Still running the stock OS, no 2 bar patch or anything (not available for my OS). This is for a supercharged LS2 and the plan is to run it in SD mode. Thanks