Me and Aaron, we're trying to get things to work properly with each other, but they don't seem to want to work. The Innovate LM one, has already been pre-progammed to output 0-5 volts, and same with the MS to accept the 0-5 volt. The Innovate reads proper AFR, but the MS seems to be displaying about +1 of a digit more than the wide band (ie 10:1 on wideband = 11:1 on MS). Has anyone came across an issue like this before?

 

Too add:

-We've already calibrated the AFR to the proper setting of Innovate 0-5V. The calibration window counts up and then seems to finish fine. Not being very experienced with the MSII, I guess this is correct?

-Do we need to remove D11? Hasn't really been an issue with the V3 board before in my experience but some searching has shown that a lot of people with the LM-1 are removing D11.

-We have not directly compared the output voltage (measured at the LM-1 or by the Megasquirt) to determine if the output voltage is correct according to the LM-1 spec sheet. That information was not easily accessible and the car just needed to be drivable to the dyno.

-The skew of readings does not always seem to be linear, though that just may be a trick of the brain.

 

my 1.0 megasquirt with v3 board always read AFR incorrectly until I messed with the wideband settings file, and found one setting that worked. the "AEM UEGO" one worked properly for my non-UEGO wideband.

 

This sounds like voltage offset between the LM1 and the MS due to the LM1 not having a reference ground back to the MS.

The only way I've seen to fix this is to ground both of them at the same point.

Ken

 

Thanks Kent, I'll give that a swirl. So just ground the Innovate itself, and the ground coming out of that audio cable at the engine with the MS correct?

 

Out of curiosity, in what kind of circumstance would D11 need to be removed? I'm using Innovate, but my brother will be using a PLX. (MSII ver 3.0)