Check the MAP sensor? Or is MAP something else? If so, why, is there a retrofit sensor that replaces the original.

I called the dealer to make an appointment and found out that they want $150.00 for a launch and retrieval fee to do on water testing plus labor time. Probably about $350.00 just to check it out. They recommend waiting for the 20 hr check and then bring it in, which is what I will do.

HAPPY FOURTH OF JULY!!!