I suppose it's possible that you only have 1-2PSI oil pressure!-eek-Enjoying watching your build and getting ideas for my car, 2008 S240 which I run in TT3. Like you, I use AIM data which I like very much. My question is this: I added an oil pressure sensor using a T fitting with the stock oil pressure switch. MXL2 dash reads 0 engine off and 1-2 psi engine running. Sent the sensor and the dash back to Josh at AIM, both check out. Had my local AIM dealer check the install, we can't figure out why this won't work. Any ideas?
Are you finding that the pressure comes up with RPM?
Have you verified the oil pressure with a mechanical gauge?
Additionally, are you mounting the sensor right on the block or from a hose? The sensor should not be mounted right on the motor, but rather remote mounted on the firewall. The vibration from the motor can cause them to give odd readings and/or fail early....
Hope that helps,