Megasquirt questions

droopie85gt

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Dec 26, 2016
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Cool. I will still sit down and list out everything I want to do, then look at the micro vs an MS3. It may be better to bite the bullet on the front end and go with the MS3.
 
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droopie85gt

Hookers and Beer for life!
Dec 26, 2016
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@a91what come back! :hail:

So I am aggressively trying to move my Holley HP. When I get that sold, I want to get a MS3. I can solder so that doesn't bother me much. I am wondering what I need to get from DIYAutotune. It's for a 2.3 turbo. So, I am looking for boost control, maybe meth control, flex fuel so I can switch to E85. Then a lot of inputs to log, like air temp before and after the intercooler, back pressure before the turbo, boost pressure, maybe driveshaft and wheel speed.
I'm looking at eventually pushing 30-35 psi thru this tiny thing. So what MS3 kit should I start with? I'm looking thru their site trying to figure this out, but figured an expert could point me in the correct direction.
 

a91what

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Depends on the budget, you could do an ms3pro ultimate and be done... or build an MS3x if you do run out of i/o there are lots of options out there for expansion that are cheap.
some tricks as well like running a single spartan3 that will connect over canbus instead of using a sensor input
 

droopie85gt

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Dec 26, 2016
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Well, looking at DIY site, the PRO is out of my range for now. I am thinking the MS3X kit would be good. I've been looking thru the docs trying to figure out if there are enough input output as is or if I need some kind of add on.

Here's my thought on my needs:

Input (I am ASSuming it will handle standard input- water temp, mat, map, tps, tach)
Then whether it's built in or a custom input:
Fuel Pressure
Oil Pressure (maybe)
Speed (maybe)
Boost
Pre turbo back pressure (maybe)
Pre intercooler air temp (maybe)
clutch pedal 2 step activation (think trans-brake 2 step activation)
Switch at the top of the clutch pedal for flat shift,
Boost controller inputs (dome pressure)
turn on logging switch
Flex fuel sensor

Outputs:
2 cooling fans (could combine both relays to one output if needed)
Boost controller (2 - 1 fill, 1 vent)
Shift light (homemade LED activation)
Water/meth injection

I'll probably just use the TFI distributor to start. Does MS need a CDI box (MSD) or can it fire the TFI. I did snag a cam sensor out of a later model ranger and would need to find a crank pulley with the reluctor wheel to keep my current thought of accessory drive, but I know I could go distributor less. Just trying to figure out the easy and less expensive way to get it running.

Probably more I haven't thought of yet.
 

droopie85gt

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Dec 26, 2016
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Got it! I'm going out of town the next couple of days, so maybe one day this weekend or next. Gotta work on the deal to swap my Mustang.