Quote:
Originally Posted by Rog246
Don't forget, that you will improve your exhaust emissions using E85 as well, DO NOT discount this. If your tuner is worth his salt, he'll be able to set it up so it will accept several tunes using a hand help/laptop tuner, so you can switch between then tunes 
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My engineer has advised not to use E85 when going for a IM240 test.
He said the E85 messes up the test equipment.