So I had my zr2 in the shop today and the dealer put in a new high pressure fuel pump. He said the old one was only putting out 1300 psi instead of the 1600 required. Also found out that the engine was replaced at 14k miles. I bought it with 17k. I don’t know why it was replaced but I guess that’s one thing I don’t have to worry about. Probably a bearing I’m guessing.