Looking for input on the 08 Chevy Duramax with the LLM engine. I am looking into what economy there may be with 100 proof ethanol injection. So far I have some 1200 miles looking at regen occurance and mileage. Dyno shows some 50 plus horsepower gain to a stock 08 Chevy 2500. Mileage gain shows only a few % but regen should be occurring less. Regen results show nearly a 25% fuel flow increase while in regen. Based on previous injection systems, I should be seeing a noticeable drop in EGT. My question is, do these 08 model trucks monitor EGT temps, trying to maintain a higher overall EGT to reduce particulates. This would then help limit regen but it seems to limit any economy results.