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978 Posts
do I need to add a fuel controller on my efi to adjust it to run properly or can you just have the dealer program my machine with out one? New to the efi world i always used to rejett my carbed machines myself but this computer stuff is out of my league for now, and not sure what you do to make sure its not running lean/rich and how getting the full performance out of machine when adding a exhaust and maybe air filter.