MTX-L vs Tunerstudio Discrepancies

[megu2ice]

There's a difference of .5 AFR between the Mtx-L gauge and my tunerstudio gauge. Does anyone know what might be the issue? I'm not sure if this has always been the case since I've installed it but I only noticed it recently. My initial guess would be the ground for the gauge might of come loose which I will check this weekend.

Is there anyway to sync the two and if not, which one is accurate?

[ak-]

Ground Megasquirt and the gauge's ground wire(s) all to the same ground. For example, the ECU ground/shock tower.
That put my readings in sync.

Also do your 0v - 5v settings in tunerstudio match whatever is programmed into your MTX-L?

[megu2ice]

The gauge is grounded to the shock tower and the 0v-5v settings in tunerstudio are set to whatever the lc1 settings are. Does anyone know the specific voltages for the mtx-l?

[ak-]

0v - 7.35 afr
5v - 22.39 afr

http://www.innovatemotorsports.com/support/manual/MTX-L_print%201.2.pdf

[megu2ice]

Made some changes to the calibration and its within .1 afr. Thanks for the help