Thanks everyone for your timely, informative and thorough responses. It may have been a spike since I was WOT in second and I haven't seen numbers higher than .8 before. I hadn't thought of a leak and I'll do more testing in the next day or so and let you know how I make out. By the way, I bought the car with only slight usage and it served as a garage queen and tourer. The previous owner was not likely to have made modifcations, but the world is full of surprises. I still have some factory warranty left and cpoe so I should be ok if my test runs show high boost numbers.