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[Smokestack]

[Luckyy]

I smell standalone 

[Smokestack]

I smell standalone  

Done. Just need some nice days that I can spend wiring in the new harness and the rest of my parts to show up.

[scurvy_bandit]

reverse copy cat!! lol

[The Asshole]

what is it?

[Smokestack]

what is it?

Megasquirt standalone engine management.

[Smokestack]

reverse copy cat!! lol

I've been wanting to do MS for awhile. Motronic crapping out on me the day I put the new exhaust in just lit a fire under my ass for the project. Body work and wheels will just have to wait I guess.

[scurvy_bandit]

Good luck with it! Looks like you are going to build it all?

[Smokestack]

Pretty much. I ordered the unassembled Megasquirt 2 kit from DIYauto.com. If the weather will ever cooperate and get above 30 degrees I can start stripping out the old Motronic harness and tie in the new MS harness. Hopefully I can get that done before the last bits of my fuel system come in. Stupid winter.

new pictures

[scurvy_bandit]

damn you....

[Smokestack]

damn you....

Of coarse, it looks like Pull n Pay's online inventory shows a V8 quattro that might have a fuel rail that would work. I'm going to the JY tomorrow, want to come?

[The Asshole]

yeah i would not even come close to attempting that, i'd just save up and buy some pre-made EFI system or go carb'd.... GL man.

[Smokestack]

yeah i would not even come close to attempting that, i'd just save up and buy some pre-made EFI system or go carb'd.... GL man.

You can get it pre-made, but I'm a cheapskate and I find annoying things like assembling integrated circuits fun. Besides, when you go SEM you really need a good understanding of how it ties into and works with your engine, or have deep pockets and know a good mechanic. I'll try to see if I can remember to take pictures and describe what I'm doing as I go along.

[scurvy_bandit]

search vwvortex for my buddy... he is doing it on his car. His SN is vdubspeed

[Smokestack]

Not for the faint of heart.

[Smokestack]

I finally got the car put together enough to try and get it to start last night. I found out that the hall effect sensor in the distributor doesn't put out enough of a signal when the computer couldn't pick up a tach signal, so I added a 1k pullup resistor from a 5v source. Got to that point at the end of my day and didn't have enough time to trouble shoot why it wasn't running yet (90% sure it's spark/timing related). Overall I've been impressed by the depth of the Megasquirt computer. It's just so much more than anything else I've worked with (mostly GM TBI system adaptation and tuning). I'm stoked to get this thing running, but work is going to suck most of my time for the rest of the week.

Still have to fit the rad support, lengthen some wires for the fan/AC, plug in the lights and reassemble the interior. Anyways, some pictures of what I've been up to these past couple of days.

How I started Monday:


How the engine bay looked shortly afterwards


Old CIS-Motronic


The official I-don't-like-how-Volkswagen-designed-this salute!


Fuel rail installed with injectors off of a turbo Volvo (~30# injectors from what I've found)


Quicky wire tuck through the frame rail


GM TPS sensor and custom bracket to fit the TB (GM TPS sensor is a lot more common than the famed 16v auto passat TB)


Installed


IAT installed in intake to TB boot


Custom intake


Mount for the computer


My custom IAC


Installed in the old 5th injector location.


That's all for now. I'll try to get some more taken later. Maybe I'll find some batteries for my camera so I don't have to use my phone.

[Southcross]

I'll warn you now, you might have some tuning issues with 30# injectors on a NA engine.  30# injectors are nearly 2x the size of the *correct* size for your engine (i.e. 15-19lbs).  Because they flow 2x the fuel for any given injector open time, they have to squirt super tiny amounts of fuel at idle.  Really short injector open times can have random issues with not opening fully.  You will find, as I did with 33# injectors, that at idle your going to run really really rich and you can't do too much about it (without sacrificing idle quality)

[scurvy_bandit]

thats why you run a 8 injector setup I guess? Makes sense.

Chris good luck, cant wait to see this when i get home.

[Southcross]

thats why you run a 8 injector setup I guess? Makes sense.

thats why I *want to* run an 8 injector setup.... small ones for idle and cruise, then the big daddies for booooooost

[Smokestack]

I'll warn you now, you might have some tuning issues with 30# injectors on a NA engine.  30# injectors are nearly 2x the size of the *correct* size for your engine (i.e. 15-19lbs).  Because they flow 2x the fuel for any given injector open time, they have to squirt super tiny amounts of fuel at idle.  Really short injector open times can have random issues with not opening fully.  You will find, as I did with 33# injectors, that at idle your going to run really really rich and you can't do too much about it (without sacrificing idle quality)

I chose those injectors for a couple of reasons. I've heard that the digi injectors just aren't quite enough for the 9a motor. Definitely useable, but only just. My target was injectors that were no more than 30# but more than the 19# digi injectors. I also plan on going force inducted in the future as well, so not having to change out the injectors later is a plus. From what I've researched on the part number, these injectors seem to be at about 28.6# at 43 PSI. It might be a bit harder to tune at idle, but I'm sure I can play with the fuel pressure and idle RPM to "fudge" it a bit for the time being. If it's too much of a PITA to tune I'll change them out. We'll see. I love being able to dig through parts bins and make anything I find work on my car. 

[Southcross]

28.6# at 43 PSI. It might be a bit harder to tune at idle, but I'm sure I can play with the fuel pressure and idle RPM to "fudge" it a bit for the time being

yep, that tis an option... you can swap between 2.5, 3 and 4 bar FPRs (if your using the Mk4/VR6 style FPR holder).  the 2.5 (mk4 2L?) would probably be your best bet for tuning.

[yokust]

30lb injectors is what ABF's run stock. So I will doubt you will have any problems tuning it. I ran 34lb injectors in my n/a 16v with out problems


Multi injector setups are SUPER gay. You can fully tune in a 4cyl to run very smooth at idle with 120lb injectors with no problems.

[Smokestack]

Maybe one of you two can help. I've been having some issues understanding how to set up the internal ignition driver to run the coil. I get fuel, but it doesn't seem to be sending a fire signal to the coil. Do either of you know of any specific mods that need to be done to use a VW distributor with MS2? Everything has been setup per the megamanual so far.

[yokust]

I have never used the internal ignition box. I either used coils with drivers or old ignition boxes.

[Smokestack]

I found a Bosch ICU in my parts bin. I'm going to dink around with the onboard driver some more tomorrow, and if I still cant get it to work I'll try the ICU.