I'd probably leave out "your tune sucks" and just try to get it sorted out with logging and a revised tune. There is just no way to make OTS tunes that work 100% of the time on 100% of the vehicles which of course is the mantra of the custom tuning crowd. At least now he's gone through the paces of what they requested. I wonder if he has spoken to John S. directly?Not surprised. Tell them their tune sucks. See if they can work with you to fix it. If not, I really think you should get a refund.