I'm using this on a turbo LS. Installation was straightforward. Values in TunerStudio are correct. Startup said 50 psi, mechanical gauge said 58. Ok a difference of 8. Maybe its my values I thought.Went out for a drive, it would gradually drop to 30 and stay there. No way, right? Well I bought an AEM 150psi transducer and an Aeromotive mechanical gauge. I found out my gauge was wrong, it was 50 psi, not 58. Then I found out this cheapie transducer was also wrong. Fuel pressure while driving was 50 also.Maybe I bought a bad transducer, but thats not my problem. I have a working one now and wouldnt use this one even if it was replaced.