Absolutely, this ECM is the hamburger with the lot, however like it's predecessors if GM haven't done the ground work on specific platforms to be E85 capable then it'll be hard to just 'switch on' full E85 capability.
The 5.3L L83 is E85 capable and uses a real sensor, not estimation. Of course we haven't seen a Corvette LT1 tune yet so who knows with them.
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