I have also been a victim of BoatTune. Even after signing an estimate, they wanted to "upcharge" me for putting my engine on a computer because their salesman mistakenly listed the wrong engine on the estimate. I agreed to pay the "upcharge" if they agreed to perform on the contract as promised, and put my engine on the computer. Their computer scan could not read my engine. We were told by the salesman that their software might need to be updated. I was asked to pay for the entire service, including the upcharge, even though their computer would not read my engine. To add insult to injury, one of the gentleman cracked my engine cowling. While he admitted it was his fault for cracking my cowling, he did not offer to fix it or pay to have it repaired. Needless to say, my boat is in another shop, with a computer scan that worked, and having the cowling fixed. Thanks a lot BoatTune. I immediately stopped payment on my funds, and have reported them to the BBB. I would never recommend taking your boat there.