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> My Microsquirt Conversion, MSQ tuning file now posted
rwilner
post Sep 27 2011, 08:29 PM
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Ok...

I'm converting my basically stock 2.0L (stock cam, euro Ps and Cs) over to microsquirt. Microsquirt is a megasquirt-derived fuel injection computer that's robot-soldered and factory encased in a weatherproof enclosure. The I/O is implemented as a single, 35-position weatherproof connector. The whole thing is about the size of 2 decks of cards.

The system I'm installing was engineered and supplied 100% by McMark. My understanding is that he usually provides these systems for motors that he builds, but I talked him into providing one for me. Below, I will document the install details here for anyone else who talks McMark into selling them a system, or who attempts something similar someday.

DISCLAIMER: I won't provide model numbers, prices, or any other info like that in this thread -- please contact McMark directly for those types of details. All I can say is that you get what you pay for and this is a top-notch system that will work for the remaining life of the car.

The system provides the following components new:
  • 4 new injectors
  • 4 new ignition coils
  • a MAP sensor
  • a crank postion sensor (CPS)
  • a crank position trigger wheel
  • an oxygen sensor and brain
  • a throttle position sensor
  • a new custom wiring harness
  • miscellaneous mounting brackets, blank-off plates, plugs, fuse blocks, etc.
The system repurposes the following items:
  • intake air temp sensor
  • cyl head temp sensor
the system eliminates or replaces the following stock items:
  • MPS
  • decel valve
  • cold start valve
  • AAR
  • thermotime switch
  • distributor
  • main FI wiring harness
  • fuel injectors
  • a pile of vacuum hoses
This system has the following key advantages over the stock system:
  • As we all know, the stock FI computer controls only fuel, and spark is controlled with mechanical and vacuum advance at the distributor. The MS computer controls both fuel and spark which allows me to optimize both power and fuel economy under all load conditions.
  • This is a closed-loop system, meaning it adjusts fuel and spark in real-time based on the lambda/AFR in the exhaust.
  • This system uses brand new, modern components with a brand new wiring harness.
  • This system will scale up to larger motors easily -- just tune a new fuel map, same sensors, same wiring harness.
  • I get to plug my laptop into my 40-year-old car, which I think is cool.
The high level install details are:
  1. Drop engine
  2. Remove all the old FI stuff
  3. Install new FI stuff
  4. Reinstall engine
  5. rough tune on the street
  6. fine tune on the dyno
  7. drive it a lot
Of course, I am doing a bunch of "while i'm in there" stuff -- replacing motor mounts, engine bay seals, gaskets, fuel hose, cleaning things, etc. etc. etc.

OK, enough babbling, on to the install! (IMG:style_emoticons/default/chowtime.gif)
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r_towle
post Apr 10 2012, 02:06 PM
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messing, no driving....
At least its fun...

Rich
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falconfp2001
post Apr 10 2012, 04:44 PM
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QUOTE(rwilner @ Apr 10 2012, 11:27 AM) *

I just discovered a cool new feature of the MicroSquirt!

The latest code revision allows you to toggle between 2 different sets of tuning parameters (VE fuel maps and AFR targets) at the flip of a switch. This means you can set one tune for 87 and another for 93, or one tune for pump gas and another for race gas.

I might have to mess with this a bit later... (IMG:style_emoticons/default/idea.gif)


I think they mentioned that as a new feature. You can use one of the spare inputs for a switch. hehehe

If you didn't see my last post for the Expanded CLT Temps. I fugured out how to load MS2Extra and it works. Gives you a lot of options that the regular firmware does not have. I don't know if it works with MicroSquirt but you can always e-mail DIYAutoTune about it.
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falconfp2001
post Apr 10 2012, 11:06 PM
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QUOTE(rwilner @ Apr 10 2012, 11:27 AM) *

I just discovered a cool new feature of the MicroSquirt!

The latest code revision allows you to toggle between 2 different sets of tuning parameters (VE fuel maps and AFR targets) at the flip of a switch. This means you can set one tune for 87 and another for 93, or one tune for pump gas and another for race gas.

I might have to mess with this a bit later... (IMG:style_emoticons/default/idea.gif)


Also the Latest MS Extra code lets you make the tables switch either by software or a hardware switch. Hardware requires some pretty tricky soldering directly to the board. Who's the guy that did you mods?
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rwilner
post Apr 11 2012, 06:35 AM
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QUOTE(falconfp2001 @ Apr 11 2012, 01:06 AM) *

Also the Latest MS Extra code lets you make the tables switch either by software or a hardware switch. Hardware requires some pretty tricky soldering directly to the board. Who's the guy that did you mods?


Jeff Keyzer, mightyohm on this site. In the microsquirt, the flexfuel signal is accessible in the ampseal connector so there's no board soldering required...not sure about megasquirt proper.
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falconfp2001
post Apr 11 2012, 09:20 AM
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QUOTE(rwilner @ Apr 11 2012, 05:35 AM) *

QUOTE(falconfp2001 @ Apr 11 2012, 01:06 AM) *

Also the Latest MS Extra code lets you make the tables switch either by software or a hardware switch. Hardware requires some pretty tricky soldering directly to the board. Who's the guy that did you mods?


Jeff Keyzer, mightyohm on this site. In the microsquirt, the flexfuel signal is accessible in the ampseal connector so there's no board soldering required...not sure about megasquirt proper.


The MS Extra is loadable to MicroSquirt. When you run the .bat file to load, it will ask what type of ECU you are using, mega or Micro.
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rwilner
post Jun 17 2012, 05:31 AM
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Over 1000 miles on this system now...I'm very pleased with how it's performing.

Attached is my .msq file. It should work with both megasquirt and microsquirt. If any of you use it and have questions, feel free to PM me.

(Of course -- use at your own risk.)

Attached File  24APR12_RTW_914_2L.zip ( 5.4k ) Number of downloads: 200
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rwilner
post Aug 14 2012, 07:32 PM
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QUOTE(rwilner @ Jun 17 2012, 07:31 AM) *

Over 1000 miles on this system now...I'm very pleased with how it's performing.

Attached is my .msq file. It should work with both megasquirt and microsquirt. If any of you use it and have questions, feel free to PM me.

(Of course -- use at your own risk.)

Attached File  24APR12_RTW_914_2L.zip ( 5.4k ) Number of downloads: 200



Trying the zip file one more time since the last one didn't post correctly.


Attached File(s)
Attached File  24APR12_RTW_914_2L__2_.zip ( 5.4k ) Number of downloads: 70
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rwilner
post Aug 14 2012, 07:35 PM
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QUOTE(rwilner @ Aug 14 2012, 09:32 PM) *

QUOTE(rwilner @ Jun 17 2012, 07:31 AM) *

Over 1000 miles on this system now...I'm very pleased with how it's performing.

Attached is my .msq file. It should work with both megasquirt and microsquirt. If any of you use it and have questions, feel free to PM me.

(Of course -- use at your own risk.)

Attached File  24APR12_RTW_914_2L.zip ( 5.4k ) Number of downloads: 200



Trying the zip file one more time since the last one didn't post correctly.


Hm, still empty

I emailed sirandy to see if there's any way to post this file to the thread, in the meantime if you want the file, PM me.
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JmuRiz
post Aug 14 2012, 07:55 PM
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Very cool status updates (see, no one needs facebook!)
I wish microsquirt could individually control 6-cyl...the packaging is so nice. I'll just keep telling myself that's the reason I don't have EFI on my 2.7 engine and my old Benz CIS motor.
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SirAndy
post Aug 15 2012, 07:58 PM
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QUOTE(rwilner @ Aug 14 2012, 06:35 PM) *
I emailed sirandy to see if there's any way to post this file to the thread, in the meantime if you want the file, PM me.


Ok, try this link:
http://www.914world.com/cantnamethisdownlo..._RTW_914_2L.zip

(IMG:style_emoticons/default/idea.gif)
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gothspeed
post Jan 18 2014, 09:05 PM
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Awesome thread (IMG:style_emoticons/default/smilie_pokal.gif) !!! ..... how is this car running now? .... (IMG:style_emoticons/default/sunglasses.gif)
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r_towle
post Jan 19 2014, 09:22 AM
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He sold it back to the original owner and bought a 911.
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gothspeed
post Jan 19 2014, 02:48 PM
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QUOTE(r_towle @ Jan 19 2014, 07:22 AM) *

He sold it back to the original owner and bought a 911.

Why would anyone buy a 911 ? ........ (IMG:style_emoticons/default/screwy.gif)

I guess everyone needs to make their own mistakes ..... (IMG:style_emoticons/default/popcorn[1].gif)
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r_towle
post Jan 19 2014, 02:58 PM
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QUOTE(gothspeed @ Jan 19 2014, 03:48 PM) *

QUOTE(r_towle @ Jan 19 2014, 07:22 AM) *

He sold it back to the original owner and bought a 911.

Why would anyone buy a 911 ? ........ (IMG:style_emoticons/default/screwy.gif)

I guess everyone needs to make their own mistakes ..... (IMG:style_emoticons/default/popcorn[1].gif)

Hey now...
I have a 911 also....
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gothspeed
post Jan 19 2014, 03:02 PM
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QUOTE(r_towle @ Jan 19 2014, 12:58 PM) *

QUOTE(gothspeed @ Jan 19 2014, 03:48 PM) *

QUOTE(r_towle @ Jan 19 2014, 07:22 AM) *

He sold it back to the original owner and bought a 911.

Why would anyone buy a 911 ? ........ (IMG:style_emoticons/default/screwy.gif)

I guess everyone needs to make their own mistakes ..... (IMG:style_emoticons/default/popcorn[1].gif)

Hey now...
I have a 911 also....

yeah, I had a few ..... back when I did not know any better ..... (IMG:style_emoticons/default/biggrin.gif)
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rwilner
post Jun 28 2016, 07:39 PM
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QUOTE(gothspeed @ Jan 19 2014, 05:02 PM) *

QUOTE(r_towle @ Jan 19 2014, 12:58 PM) *

QUOTE(gothspeed @ Jan 19 2014, 03:48 PM) *

QUOTE(r_towle @ Jan 19 2014, 07:22 AM) *

He sold it back to the original owner and bought a 911.

Why would anyone buy a 911 ? ........ (IMG:style_emoticons/default/screwy.gif)

I guess everyone needs to make their own mistakes ..... (IMG:style_emoticons/default/popcorn[1].gif)

Hey now...
I have a 911 also....

yeah, I had a few ..... back when I did not know any better ..... (IMG:style_emoticons/default/biggrin.gif)


I now have the space to buy another car. Not "Towle barn" space, but enough...

Passively looking for a 914 again (IMG:style_emoticons/default/smile.gif)

This time, I think I'll actually combine this with a 2056 or a 2270.
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r_towle
post Jun 28 2016, 09:05 PM
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I got one for you...
76, green with white interior...
Near me, not mine...new paint and interior.

Not started in ten years...
You can borrow my truck and trailer.

Rich
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2mAn
post Jun 28 2016, 10:15 PM
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QUOTE(r_towle @ Jun 28 2016, 08:05 PM) *

I got one for you...

Rich


enabler! (IMG:style_emoticons/default/happy11.gif)

If I get the car Im looking for I plan to do the same and this is a 2270
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rwilner
post Jun 29 2016, 06:32 AM
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QUOTE(r_towle @ Jun 28 2016, 11:05 PM) *

I got one for you...
76, green with white interior...
Near me, not mine...new paint and interior.

Not started in ten years...
You can borrow my truck and trailer.

Rich


I'm interested, at the right price of course.

BBBs and white interior have to go.
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mailmanboise
post Jan 8 2019, 10:56 PM
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Ive got a 73 with a 1.7 ish motor, I believe its had some jug work done because they have paint pen marks on them. The paperwork I have says that it has a Norris 272 cam. Im running a proper D jet system ( she had twin 40's). Ive had to slighty modify the MPS, at idle Ive got a fluctuations in vacuum as well as low static compression (85 psi on all 4) she has a nice "lop" to her as she idle and it strong all the way thru the power curve. I can chase down my friends 76 914 2.0 going up a hill..
Im interested in doing a microsquirt system, with either a map or maf sensor, I guessing because of the fluctuation of vacuum at idle I may have to go with an MAF sensor. Any advice would be appreciated
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