Quote:
Originally Posted by K19BMW
So under a 35-40% blend I can go back and forth from E to regular gas if I am map 5.
Just to clarify though, if i have e85 backend flash I can only use map 5 with E? Or is it in order to use any of the maps (map1,2, etc) i will need E?
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I don't have a backend flash so I'm not very familiar with them, but I do know that if you have a backend flash for E85, regardless of what map you're on you must have E85, plus the stock LPFP can't handle much more than 35-40 anyway in most cases, so just stick with map 5 is my opinion. It will auto adjust for either fuel type when it sees it.
The sweet spot for me was E40, map 5 with my boost fail safe at 19psi since I would typically see 18-18.5 on that setup.