As Brett mentioned a couple weeks back, the factory test is to have the car in 4th gear, 2000rpm and go full throttle from there, preferably on an incline (I have the perfect spot to do this near my house). I rarely ever saw 1.8 bar on my car, the digital gauge is not a good indicator- it's much better to plumb in an analog gauge. That's a good buy, $6700 for a '91 w/ 86k? Taka