MS3PRO EVO on 4th Gen 3sgte Options

[HardHead93]

I just got my MS3PRO EVO in for my conversion to standalone on my 4th gen 3sgte. I am planning on taking my time with this install to make sure all the wiring is correct and clean looking. To help with the install I grabbed a 5sfe ECU and mounting hardware out of a junkyard car to use as a template for mounting the Megasquirt into the car.









Got relays, distribution blocks, and different color wiring for a clean centralized install.




My goal is to wire the ECU up for as many features as possible and once I get good tune running, start enabling the features. I spent the last few days reading the instruction manual and it has me excited with how much it can do.

This post has been edited by HardHead93: Sep 8, 2017 - 8:15 PM

[HardHead93]

I spent the last few days tracking down issues to get this car ready for the tuner. The latest problem was as I was I was attempting to get a basic fuel map dialed in with AutoTune and I kept getting inconsistent AFRs. This was happening on the road and while idling. I just could not figure it out. Then I looked at the MAP gauge on TunerStudio and the MAP gauge on my A-pillar cluster and they were off by 5 in-Hg at idle. WTF! What could be causing that? After talking to a few people they basically told me that if there are any discrepancies between the software and your aftermarket gauges, 9 times out of 10 the software is wrong.

I did some looking around in the software and found that I had the wrong MAP sensor selected under calibrations. I was using a 2.5 bar MAP setting when the MS3PRO EVO is a 4 bar. I selected the correct MAP sensor calibration and like magic, the gauge and TunerStudio were within 0.1 in-Hg of each other.