PFI
I am running the PFI unit on my K9 2007, it works great and the support is the best I have ever had on any product. These guys really want you to be satisfied and go to extra lengths to make it happen. It gave my bike about 12 horsepower over my XXX carb. That is dyno proven not guess work. I have modified my bike alot though, but the FI unit in the end was the icing on the cake. I would do again with out a question, and I have no regrets at all. Much better acceleration and throttle response you have 256 jets vs 3 in the carb. Not a bad deal you get a new air cleaner, new high performance ignition, and the FI unit. I have not had the first spit back or cough or cut out. Joe Tersi designed this unit and thats all he does drag harleys. He is the guy with the dyno drag machine at all the bigs bike meets. If I can provide any info let me know.