Not that I have said a lot about my build, but I got my DIY-EFI stuff from Megasquirt today. Looks like I'll be having some fun the next few days (weeks?).....

From this:


To this:


In just nine gazillion steps and 8 cases of beer.

Haha, that is an awesome pair of photos!

7 hours worth of soldering 2 hours for USB computer stuff

Get a stand and magnifine glass and some flush cut dykes it helped me a lot

I used a clamp on magnifier lamp and bought a small soldering set with a ground pad and strap. Putting it together was the easy part. I burned out on the computer end. The problem with computer guys is that they think everyone is a computer guy or wants to be.

There is a lot of BS in this thread but some good MS stuff too. Some good LINKS .

Great pictures Beater! After populating all the resisters tonight and soldering them in, I can really relate. I enjoyed myself tonight. After it's all said and done, that's what it's all about. What a great project.....

How much does it cost to DIY the entire system to make it work? I'm talking all-in including the throttle body injector and controller?

That number could be all over the map depending on your goals and the cost of the throttle body. I TBI'd my T-bird for around $800.

Bare minimum for me:
$279 - MSII assemble it yourself.
$79 - 10ft harness.
$189 - LC2 Wideband O2
------
$547

Add $65 for a nice to have MapDaddy sensor for high boost (over 14psi) and "better" barometric correction. Then you may need a soldering station of some kind, $60 Simulator for testing during assembly, power supply for the desk (I just found an old router or such cord that provided 9-12v and cut it up).

Alternatively, an assembled microsquirt and harness is $339 for the short harness and $369 for the long harness.

The throttle body could be a pricey new unit, or a cheap one from a junkyard 4.3L/Chevy 305, or ebay score.

Likewise for fuel pump, you can junkyard it (I ran a $30 junkyard pump for over two years! And only replaced it because I was going racing so it's now a spare), or a new one is around $80 depending what the TBI requires for pressure.

Then likewise for sensors. Assuming the TBI has a TPS sensor built in, you just need a coolant and intake air temp sensor, which I tend to grab from the junkyard because they rarely fail and will come with the pigtail. The Microsquirt will require an external MAP sensor, which also can be sourced via the junkyard. These can be sourced from about any GM car/truck from the late 80's to yesterday.

So the cost can be as low as $528 (Micro+LC2) plus parts scrounging which can be as low as another $100 or as high as you are willing to spend.

Thanks for that.

I think when it's time I'll just do the FITech one I found a couple posts down.

If you go the junkyard route and get the throttle body, sensors, wire harness and maybe tank furl pump and lines it cab be pretty cheap. That is if you count your time as fun. I may still use mine someday.

I got an MS III to run the individual coil on plug ignition, a 4 bar barometric sensor, a knock sensor, a simulator to test every thing and a 36-1 crank trigger wheel for $ 750.00

I still need my coils, injectors, and fuel pump. I'm gonna go the junkyard route for my sensors. Also, I will use the Megasquirt super cool individually labeled wires to build my wire harness.

Oh, and I scored some relays and circuit breakers for free from a buddy.