MSgpio.com read only forums (Jan.15,2018)

Lance
I was going thourgh the settings for ISS and VSS, when I change the ISS rev/teeth to 31 it also changes the VSS to 31. The 4L80E has 31 teeth for the ISS and 40 for the OSS/VSS? Did I miss something.
Thanks Dave

Hi Tim Here is a pic for you, All transfer cases have a low gear ratio and when in 4WD low the speedo output has changed. So the GPIO has logic for that. your TPS should be fine the only thing I'm not sure on is engine rpm input Brad is correct in that ISS shouldn't be used as engine input. I don't ...

Here you go

Well as far as the 2/4wd you can leave this out if you are 2wd , for the pressure switches they are swA,swB and swC and you built them already. For the non can items EGT1 is set up for this you can bring in MAP or TPS I don't know if we need both and the ISS can be a RPM input ( ISS is 31 teeth, the...

When I ordered last month only the transistors/ insolators were on back order and I ordered from Digikey and Mouser. You mite ask DIY autotune or a local shop or other online shops.

here is the BOM link http://www.megamanual.com/4L80Ebom.htm

The build guide is complete the link is in the GPIO assy area and here http://www.msgpio.com/manuals/mshift/4L80.html

Here is the link for the BOM http://www.megamanual.com/4L80Ebom.htm

Here is the link for the 4L80E build guide http://www.msgpio.com/manuals/mshift/4L80.html

Once the BOM is finished I'll post that to

Got the GPIO built this weekend and was fairly simple, I will try to have a build guide completed buy this weekend provided I can get my desk top working. I had a software problem and had to dump every thing, lots of fun .

Lance wrote: The reason that increasing R37 and R45 (Rb and Rd below),( the 2 megaohm and 300K ohm resistor)
With the 680K resistors in R37 and R45 ,

Lance.

Looking at the build guide R37 is a 220K ohm resistor and R44 is a 2.0M ohm resistor, do we replacew R37 or R44? Thanks Dave