Ive had the LC-1 XD-1 hooked up for about 2 months with no problem and I just recieved my emanage ultimate and I finally intstalled it. Now it has a hook up for a WB so I hooked up the analog out to a Profec E-01 harness. (only use the white wire and hook that up to the analog out from the LC-1 Harness.

Well I put it all in and I went to datalog and my reading from my XD-1 is ALOT leaner than the signal going to the emange ultimate ?? when the gauge is reading lets say 14.7, the computer is getting a reading of 10.8-11.3 ?? Any ideas guys ??

I thought I have all the grounds set up properly. I have the two grounds going to the engine seperate, and the one going to the engine by itself.

-matt