Compression numbers are a little misleading to most people on the 4tec motors. These are not 2 strokes where high compression testing along with high test fuel is one of the ultimate goals for maximum power. There are a ton of factors involved with 4tec compression and even the compression itself can be changed by adjusting cam gear position. When testing compression, the motor is only spinning at a couple hundred rpms which basically tells you nothing what the motor will be doing at 8000 rpms which is more important as well as what it is doing on the way up to 8000 rpms which is also very important. So, for the sake of this conversation, I'll just say that I've seen compression readings from 110 to 160 psi on sc motors and they all ran great for the average person. Unless you're interested in getting maximum performance and pushing your motor to the edge of its limits by doing doing tons of testing and retesting by adjusting cam gear position vs. timed speed runs with rpm curves, I'd just ride it and be happy with the compression you have.
