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Old 08-11-2018, 02:45 PM   #1  
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Default Build Guide for Megasquirt from Kit

If you've spent more than 5 seconds on this forum you should know about trubokitty.com by Braineack which shows in excellent detail the process of building the MS3X from the diyautotune kit. I recently went through the whole process and filmed it to provide a video companion to the written instructions. All the credit is to Braineack obviously but I figured if you were new to a soldering build of this size like I was, actually seeing it may be helpful. I have a new channel on YouTube which is 90% Miata related. I'm not selling anything, just trying to give something back to the community. Whenever I work on the car, I try to whip out the camera and narrate a bit.

The first three parts are out now (an intro, the main MS3X build, and the PNP harness build). Upcoming videos will show the install, initial setup, and some tuning.

I tried to keep the length down but still show a lot of detail. Let me know how I did balancing that.

Here you go, please enjoy.

Intro:

Main Build:

Plug and Play Harness:
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Old 08-18-2018, 03:02 PM   #2  
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Old Yesterday, 03:47 PM   #3  
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Where is your WB sensor screwed in?
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Old Yesterday, 07:44 PM   #4  
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Quote:
Originally Posted by huesmann View Post
Where is your WB sensor screwed in?
​​​​​​
Mine is in the stock location mostly. I have an after market header so it's just a bit lower than oem. My wb controller has a narrow band simulator which is what I connected to the stock wiring. I ran it that way for a couple of months with no problem. The wb signal goes straight to the ms3x harness.

I have a video on that install also.
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Old Today, 02:47 PM   #5  
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Where's that video?

How did you connect the NB signal to the MS—tap into the wire at pin 2N on the OEM connector? Why not just run the wire to the signal wire on the OEM connector by the CAS?
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Old Today, 02:54 PM   #6  
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very neat videos
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