I checked mine about two weeks ago with only one plug out and the coil wire off. came up with 180 - 190 psi on a 94 GSR with 182,000 miles. According to this it should go higher than that going by this procedure? I was happy with my original results for the miles I have, although they are 95% highway miles. Thats a testament to the importance of frequent oil changes and not skimping on oil quality.