I mentioned in one of my other posts about some issues I was having with my car when I recently put it on the dyno. To make a long story short...My wide band was showing pig rig (10.2) at WOT, so I wanted to get it on a machine to see what was going on. So a little bit ago I got the car on a dyno. My tuner's wide band was showing 11.2 the entire pull up to 6400 or so, which mine was showing 10.0, so it seems my o2 sensor is bad. I had no spark blow out, the car was not going lean suggesting I have plenty of fuel, and the car was seeing 19 or so psi, but is WAY down on power. We did 3 pulls and after the 3rd the car was barely making 400rwhp. So today I started with a compression test, thinking I may have a bad head gasket or possibly something going on with a piston ring or maybe even something in a head...so wanted to start with a compression test and next I'll do a leak down test. My results are below: #1 - 130 #2 - 143 #3 - 133 #4 - 135 #5 - 140 #6 - 135 #7 - 140 #8 - 135 After doing some research online, I'm seeing some guys getting a lot higher numbers, but obviously different setups may result in different findings. I'm running a 97 romeo block, PI heads, Manley 18cc pistons, Permatorque MLS 3.625 head gaskets...so I should be around 9.5:1 compression. My cams I am running are overall a pretty mild blower grind, .220/.230, 533/571, 114. I'm thinking next I'll do a leak down test to see what kind of results I get, but just wanted to get any input or advise on my compression results, this is the first time I've done a test on this car. Thanks in advance.