Installing Megasquirt - dizzy pick up

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180sx
Posts: 230
Joined: Thu May 08, 2003 3:25 pm

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Guys i am helping a buddy battle with megasquirt. Its v3 msI going onto 93 coupe. We have everything hooked up , car turns over and injectors fire. But:we are not getting rpm signal and coil isn't firing.Controller is connected to megatune, all the settings are set as per directions.Coil is running off 2 wires: 1 12 volt and 2nd negative goes to pin 36 on the squirt. For dizzy pick up we connected:B/W 12v+ same wire as coil and it gets 12v.White to MS Pin 24 on the way there resistored to 12v source and connected to tach itself.Black GrounddedBlack Groundded.


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Edub1
Posts: 1931
Joined: Thu Nov 10, 2005 2:20 pm
Car: 89 240sx KA-T

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There is a write up from DIY Autotune floating around - just search.

S13FX
Posts: 1892
Joined: Sat Apr 30, 2005 10:59 am
Car: '69 l20b Dimeski :)

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Here you go brother, zerothread/221623

Thats the link to the write up .. It's in our sticky up top just an FYI ...

180sx
Posts: 230
Joined: Thu May 08, 2003 3:25 pm

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YAH i seen that write up. Just talks about wiring it up not the initial set up. There is many settings to enter as well for initiL mq file.megamanual has been a great tool.

1 I wired it up based on the diagram in the thread , but my ecu came prebuild for ka24 dizzy so i didn't need additional resistor on dizzy signal wire(there was one inside the ecu already, 2 of them made ecu display 0 rpm). 2 ecu has jumpers inside that need to be set to fire coil directly and to read rpm signal via pin 24. (EVEN THAW IT WAS BUILD FOR KA24 dizzy /coil , U NEED TO CHECK THEM 1 of mine was not jumped)

otherwise its runnning as of a few days ago!!! whoohoo buddy is quiet happy.

Taiden
Posts: 9
Joined: Sat Jul 14, 2007 7:35 pm
Car: 1992 240sx Hatch SE - 100% STOCK

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So you guys got it working?

How hard was it to get it to idle solid through warm-up enrichment?

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Edub1
Posts: 1931
Joined: Thu Nov 10, 2005 2:20 pm
Car: 89 240sx KA-T

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Good work, please keep us updated. What is his setup?

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Edub1
Posts: 1931
Joined: Thu Nov 10, 2005 2:20 pm
Car: 89 240sx KA-T

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Any new developments?

180sx
Posts: 230
Joined: Thu May 08, 2003 3:25 pm

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yah car is parked in the garage haha his on vacation. ka24det with ssa auto t3/4 kit with fmic, ms and 460cc inj.

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Edub1
Posts: 1931
Joined: Thu Nov 10, 2005 2:20 pm
Car: 89 240sx KA-T

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Updates? I'm getting ready to buy the MSII 3.57 and get this damn car on the road already.


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