top speed 15 mph

A buddy lent me his 1999 GTX for the season. I'm new to PWC but I used to be a auto mechanic in the early 1980's. The GTX has 79 hours on it, was recently tuned up and ran fine for the first 5 hours topping out at about 45MPH at WOT. Today my wife and I were crusing in a local canal at...