Originally Posted by ghosthunter Not all EFI engines are E10 compatible. E10 related discussion threads: http://tsikot.yehey.com/forums/showthread.php?t=59295 http://tsikot.yehey.com/forums/showthread.php?t=52659 Agree. That's a common misconception. Early Honda PGM-FI are as vulnerable to ethanol as most carbureted engines.