4 tunes from ZZP and never a problem. Not as good as a dyno tune but got the job done. Over the years I owned my GP the trap went from 88mph to 115mph.
I have had an issue with an Overkill tune in the past. He installed the wrong gear set into the settings (stock gear set! so it should have not been a problem) I spent weeks trying to figure out why my shift points were ****ed up. He also has about the worst customer service (doesn't answer emails for ****)
People are going to have arguments on both sides, but ZZP is a big part of why this community is still moving forward, considering how much things have fallen off.
