Can I ground my LC-1 to the ECU?
Last edited by Jorge T; Jan 25, 2008 at 04:32 PM.
I agree 100%. If you are logging thru an ECU pin, then you should ground the signal ground to the ECU. The power ground should be grounded separately as per Innovate instructions no matter how you log the LC-1.
On the Evo, I wired the signal ground to the battery and the power ground to the chasis.
On my Civic where the ECU reads from the controller directly, the signal ground is connected to the ECU ground and the power ground to the chasis.
Hope this helps somehow!
On the Evo, I wired the signal ground to the battery and the power ground to the chasis.
On my Civic where the ECU reads from the controller directly, the signal ground is connected to the ECU ground and the power ground to the chasis.
Hope this helps somehow!
If the LC-1 data are being logged via the serial cable, there is no need to attach the ground wire to the ECU ground. However, if the LC-1 data are being logged via the analog out wire attached to an unused ECU input (to my knowledge, no one with an Evo is doing this yet), then its necessary to attach the signal ground to the ECU ground so that the analog voltage has the proper reference ground.
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