MS2 or MS3?
 

I'm in the process of converting my SC to EFI/ITBs and COPs with wasted spark. I'm somewhere between thinking I'm half way done and really only being an eighth done.

Currently trying to figure out if I can use MS2 or if I need MS3. I'd like to go full sequential down the road, but it might be a bit. It sounds like Microsquirt can achieve this but I haven't read anything confirming MS2/MS3 can (I'd assume it could). I'm planning on going with GSF 36/1 crank trigger kit with a Motorcraft DY913 VR. Is anything else needed?

I contemplated going EDIS but would prefer the clean streamlined look COPs give.

A mock up from the other day

http://forums.pelicanparts.com/uploa...1585540050.JPG

http://forums.pelicanparts.com/uploa...1585540050.JPG

edit for correct info: ms2/microsquirt can drive smart coils in wasted spark setup.

incorrect ***if i am not mistaken, microsquirt cannot drive the 6 COP's. You need EDIS as inbetween. I think with COP's, you actually need 2 EDIS boxes in parallel. Others will chime in i'm sure. ***

(i am running microsquirt, EDIS, GSF wheel, but with normal motorcraft coil pack and spark plug wires)

microsquirt is MS2.

I believe it can drive COPs in wasted spark, specifically coils with ignitors built in and wired in pairs. I read of one or two users here doing so. WLED can be used as a spark output but needs a resistor.

Where do you have your EDIS mounted?

Hi Josh, my EDIS sits where the CDI used to sit, and the coil pack sits where the distributor used to sit.

more info here:
http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/953323-wasted-spark-cop-edis6-module.html

MS2 and Microsquirt can both run 3 channels of logic level ignition for wasted spark on a 6 cylinder engine. Yes, WLED can be used as a signal wire and requires a pull-up resistor to raise the output voltage high enough for trigger. WLED is 3.3V and needs to be +5V or +12V depending on the coil.

When you say you want to run sequential do you mean 6 channels of sequential fuel and ignition? In this case MS2/uS will not do this and MS3 will.

IMO there is no "full sequential down the road". You either wire it now or don't. It's an entirely different setup between the 2 and you will have to rewire the car to go full sequential from batch fire.

IMO (having installed a bunch of EFI systems). The only reason for full sequential is emissions or cam choice. Otherwise, I don't think most people could tell a difference.

MS2 can do wasted spark COPS , using 3 logic level outputs to smart coils, MS3X can do sequential COPs.......and i agree with Jamie........I've tuned with both wasted spark and full sequential....for most systems, you will not notice a difference.

regards,
al

how much do most people end up investing in a MS2 and an MS3? Just curious how much savings there is over an AEM Infinity or a Holley Terminator X universal ($999 with a ton of the other parts you'll end up needing included)

Microsquirt is only $399. It does what most air cooled owners need it to do. I’m Running microsquirt on my turbo conversion with flex fuel sensor and the ability to do boost control. I’m just running EDIS.

It does "MORE THAN" what most air cooled owners need it to do.

Most modern ECUs have way more inputs and outputs than are required to run an engine. Why pay for unnecessary functions?

I have used Microsquirt on several recent builds - including my own car. Cost effective, small footprint and easy installation. I just wish the wire connector came out the side and not the top. But then again, I wish that about almost all modern ECU systems.

To the OP. Ultimately Your ignition choice is most likely possible with Megasquirt or most any other ECU. Just have to decide what you want from your installation related to function, reliability and aesthetics.

Ms3pro is the way to go. Way less headaches and very simple to setup. I am running COP and sequential fuel and ignition with knock control. You can use as many or as little of its features as you want, but it is much easier to set up than an ms2 or ms3. I am also a megasquirt dealer and have sold a few to members on here so hit me up if you have any questions.

I would go MS3 Pro personally, it may seem like a lot but the more time and effort you put into making the features work the happier you will be.
Coil on plug is important if that is the look you are going for. I am unsure what coils work as coil on plug, I read tundra coils worked at some point but I am not sure what ones.

Alright..now I'm curious with Microsquirt. It sounds and looks like it can accomplish what I need and saves me 200+ dollars. If I'm thinking about everything properly in my head, I don't need the ECU to control more than spark and fuel. I'd like to run COPs along with the cleanest looking set up without spending north of $650-700. I'll toss my sequential spark out the window, doesn't seem necessary

This is a bit of a side tangent but I'd also like to delete most of the stock motor harness. I know I'd have to keep alt, starter and oil pressure wiring to the fuse panel in engine bay. Can I delete everything else from the harness and wire everything else EFI, ITB and spark to Microsquirt?

I've been looking at denso 9091902234/denso 6731301. A touch pricey, any other options? Do the coils need to be 5v specific? Also saw some bike coils, on one of scottrx7tt threads, but there may have been a misfiring issue with those?

Reverse switch wiring, oil pressure idiot light, oil pressure to gauge, oil temperature to gauge, starter solenoid wire, starter to alternator, alternator DF (blue wire) and power out to rear panel. Are all you need to keep.
Same as if you were going to carbs with separate ignition. If doing it all at once.
Otherwise keep the ignition wiring in tact as well until you do ignition.
(A lot of people do fuel first to get it up and running before diving into ignition)

Im going with MS2 and wasted spark myself. Fuel first, then COP once the PMO’s are dialed in.
Just need to find the time to do the swap out from my current Bitz kit....

4 wire COP and TPS and Injector harnesses are cool and kind of fun to make, ‘cause they are different than the usual fare..... :)

http://forums.pelicanparts.com/uploa...1585674712.jpg

I used audi 1.8t coils. You can also use the red R8 coils if you want...red coils. They are 12volt, signal, signal ground, and ground. Four wire smart coils. They were like $19 ea.

Take a look at my spreadsheet on my old efi conversion thread. My car is a 930 so not everything is applicable, but I list all the components used for the conversion.
https://onedrive.live.com/view.aspx?resid=89033EA9FB01D9A0!911&ithint=file%2 cxlsx&authkey=!AF3xZ4TG0wXhxq0

Not seeing much that's under $30 that's OEM. Do you have a picture of yours, do they sit pretty flush with the valve cover?

https://www.ecstuning.com/b-genuine-volkswagen-audi-parts/ignitcoil/06e905115g/

I've had this page bookmarked for awhile. Thank you!

https://shop.advanceautoparts.com/wc...1_pri_larg.jpg

Local FLAPs has these on their website for $24.99 ea but if you buy 4 or more you get 25% off. If you have their loyalty program points you can take additional off of that.

These are shown to fit a 2006 VW Passat 1.8T if you need to look it up with an application.

These will snap onto the head of the spark plug and protrude about a 1/2" above the valve covers. Not perfect but good enough to where it doesn't look bad.

Another option might be the V6 Panamera coils. Same 4 wire plug I think but might be slightly shorter.
https://shop.advanceautoparts.com/wc...0_pri_larg.jpg

Excellent. Thank you for the information.

I'm leaning in the Mircosquirt direction. Does anyone have a good idle control sorted with Micro? I might be over thinking idle too, I'll take that reply. I share this car with my dad (he's not a grease monkey like the rest of us) and I'm not sure how keen he will be on blipping throttle for 30 seconds on cold starts..