To anyone that is interested out there, I wanted to post up some pictures and info about doing Megasquirt on a 2F. My cousin recently started building a 1974 FJ40 that had previously been converted to a carb'd V8. When he acquired the truck it had not been working for about 10 years. He had a nice 2F sitting in his shop ready to go in and wanted to fuel inject it. I offered to help since he wanted something different than a lot of the kits on the market that come pre-tuned and I had done a few builds with Megasquirt.
Feel free to PM me if you have any questions. I'm going to post several photos here and with some brief descriptions and a basic parts list if you want to do Megasquirt on your 2F using a Chevy TBI.
This was my first go at a Megasquirt install and I pretty much just copied the DIY Autotune write up on a tbi chevy 350 megasquirt 2 install then applied it to an inline 6. You can get a good idea of what i did just by reading this article. MegaSquirt Carb to EFI Conversion - Part 1: TBI Fuel Only - DIYAutoTune.com
Most of the information you need is on a video series i did about this build on my youtube channel. I only took a few pictures of the process but I have quite a bit of video that I will link to below. The videos are mostly overviews of my progress every time I worked on it. I go into depth about what I did and what parts i used, so dont worry if you are not satisfied with the information in this thread. Much more is available in the videos. Feel free to comment in the videos and i will get back to you asap.
Here is the link to my build playlist (I talk pretty slow so you can watch them on 1.5x speed for best use of your time
)
Megasquirt FJ40 - YouTube
Overall the project was a success! It runs great and sounds clean and healthy. However, I have not driven the truck more than around our fields. I will post and update as soon i get it out on the roads and drive it.
I am more than happy to send you my megasquirt base tune file if you interested just PM me and i will send it over. the fuel and ignition maps are totally rough but it has all the right settings to run the motor.
Basic Parts list:
Megasquirt 2 assembled from DIY Autotune (modified for HEI ignition input) $468
8' wiring harness $83
Assembled Relay board $104
Relay board harness $89
Gm air temp and coolant sensors $30
Fuelpump kit $100
Junkyard TBI $40
TBI rebuild kit $15
3/8 pushlock hose $30
random pushlock fititngs $50
DUI Toyota distributor and wires (Modified for 7 wire HEI module) ~$550
TBI to toyota adapter ~$100
TBI air cleaner ~$70
AEM UEGO Wideband $170
Blue Sea 6 fuse block $30
80amp Main relay $15
I will update this list when I remember more things, this is a basic list that gives a good idea of what is needed. If your looking at this list and thinking that its kind of expensive well ... it is. knowing what i know now i would do it much differently if i did it again. I have done a hand full of Microsquirt installs and i would just use a microsquirt if i did it again. The main reason i used everything i did was because i didnt want to get in over my head on the first shot at megasquirt. So i just followed the DIY Autotune article and ordered everything they said to order for the build.
I Hope this info and videos gives you an idea of how simple megasquirt really is. It seems daunting at first but once you install one you wont think its all that bad. The megasquirt itself needs like 15 wires to run the motor, just hooking up the sensors correctly and reading wiring diagrams is really the most difficult part. Regardless of what motor your running the fundamentals of efi work basically the same on all motors. Just take some time and read a lot about EFI and Megasquirt before you start. Then you will have a better understanding of what everything is doing in the system.
Feel free to PM me if you have any questions. I'm going to post several photos here and with some brief descriptions and a basic parts list if you want to do Megasquirt on your 2F using a Chevy TBI.
This was my first go at a Megasquirt install and I pretty much just copied the DIY Autotune write up on a tbi chevy 350 megasquirt 2 install then applied it to an inline 6. You can get a good idea of what i did just by reading this article. MegaSquirt Carb to EFI Conversion - Part 1: TBI Fuel Only - DIYAutoTune.com
Most of the information you need is on a video series i did about this build on my youtube channel. I only took a few pictures of the process but I have quite a bit of video that I will link to below. The videos are mostly overviews of my progress every time I worked on it. I go into depth about what I did and what parts i used, so dont worry if you are not satisfied with the information in this thread. Much more is available in the videos. Feel free to comment in the videos and i will get back to you asap.
Here is the link to my build playlist (I talk pretty slow so you can watch them on 1.5x speed for best use of your time
)Megasquirt FJ40 - YouTube
Overall the project was a success! It runs great and sounds clean and healthy. However, I have not driven the truck more than around our fields. I will post and update as soon i get it out on the roads and drive it.
I am more than happy to send you my megasquirt base tune file if you interested just PM me and i will send it over. the fuel and ignition maps are totally rough but it has all the right settings to run the motor.
Basic Parts list:
Megasquirt 2 assembled from DIY Autotune (modified for HEI ignition input) $468
8' wiring harness $83
Assembled Relay board $104
Relay board harness $89
Gm air temp and coolant sensors $30
Fuelpump kit $100
Junkyard TBI $40
TBI rebuild kit $15
3/8 pushlock hose $30
random pushlock fititngs $50
DUI Toyota distributor and wires (Modified for 7 wire HEI module) ~$550
TBI to toyota adapter ~$100
TBI air cleaner ~$70
AEM UEGO Wideband $170
Blue Sea 6 fuse block $30
80amp Main relay $15
I will update this list when I remember more things, this is a basic list that gives a good idea of what is needed. If your looking at this list and thinking that its kind of expensive well ... it is. knowing what i know now i would do it much differently if i did it again. I have done a hand full of Microsquirt installs and i would just use a microsquirt if i did it again. The main reason i used everything i did was because i didnt want to get in over my head on the first shot at megasquirt. So i just followed the DIY Autotune article and ordered everything they said to order for the build.
I Hope this info and videos gives you an idea of how simple megasquirt really is. It seems daunting at first but once you install one you wont think its all that bad. The megasquirt itself needs like 15 wires to run the motor, just hooking up the sensors correctly and reading wiring diagrams is really the most difficult part. Regardless of what motor your running the fundamentals of efi work basically the same on all motors. Just take some time and read a lot about EFI and Megasquirt before you start. Then you will have a better understanding of what everything is doing in the system.
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