Matt and other DIYautotune/MS people

I have a friend selling a nicely priced MS2 v3 setup.

I am trying to figure out what I need for my bmw m42 powered 318ti, and this is an option(if it will work) If not, no worries and I'll just snag one of your guy's MS3's.

I need to be able to control 4 high impeadance injectors, individual COP, and of course, thats about it.......I can't seem to find anyone with knowledge of running this with the factory knock/cam sensor though, so the whole crank trigger thing is causing me headaches.

AFAIK, its currently setup for a v6 sho engine, so IDK if it can be adapted back to a 4cyl(I'm a newb with this)

Any help would be appriciated.

Is it challenge priced? If you don't go for this I may be interested if that is an option.

In reply to hobiercr:

IDK pricing yet, if it won't work for what I'm after, I'll definitely forward the info. He doesn't speak much english though, and lives in Mexico.

Its sad, I can go with the new ms3 and still stay under budget

It will control the injectors just fine and to control the ignition, you'll need to run the MSExtra code and make some changes to add the appropriate ignition control parts to the hardware.

Read the MSextra manual thoroughly: http://msextra.com/doc/ms2extra/MS2-Extra_Gen_Ignition.htm before making a final determination and ask any new questions you might have.

Good luck!

yamaha wrote: Its sad, I can go with the new ms3 and still stay under budget

Berk you.

Let me know though. With all the wiring/sensor issues I had this weekend I may just want to gut and MS.

In reply to turboswede:

Thank you, I'll read that closely when I get home.

In reply to hobiercr:

I will let you know, this sure beats my plan of putting a set screw in the factory air metering box to trim out larger fuel injectors.....(in theory it should work, but sketchy)

hobiercr wrote:

yamaha wrote: Its sad, I can go with the new ms3 and still stay under budget

Berk you. Let me know though. With all the wiring/sensor issues I had this weekend I may just want to gut and MS.

I think if you search on the T-D forums you'll find a harness from a turbo minivan will swap in and get you away from the LM/PM nonsense and toward a newer harness that hasn't been graced by the hands of morons, heat and age. :)

Not sure what trigger wheel is in the m42 but I have done a few m50,52s witht the 60-2 trigger and its not hard at all. Those use cops that need a driver, which would need to be installed.

Find a link to anyone ms-ing that motor and I will try and provide more detail.

In reply to Paul_VR6:

That's part of my problem, everyone is either using ancient voodoo witchcraft or spending cubic dollars on the motec stand alones.....and even those are in a small group these days.

I don't feel like making a return to bf.c to ask....as I'm still bitter over being banned a long time back.

Hint: go to the MSExtra or MegaSquirt forums. Not the vehicle specific forums.

First off, keep in mind that buying a used MegaSquirt can be like buying a used project car. Most of the ones out there are home-built. It's likely to have mods, and it's up to you to understand what the mods do and assess how well they've been installed. If you're not familiar enough to evaluate the quality of the workmanship when you open the lid, this could be a risky buy.

yamaha wrote: I need to be able to control 4 high impeadance injectors,

That's easy enough.

individual COP,

That's likely to need mods; it is unlikely they would have put four coil drivers in one on a Taurus SHO.

and of course, thats about it.......I can't seem to find anyone with knowledge of running this with the factory knock/cam sensor though, so the whole crank trigger thing is causing me headaches.

MS2/Extra wheel decoders are a lot easier to deal with than MS1 or B&G code. This is probably a generic missing tooth wheel. You'd need to know:

1. The number of base teeth
2. The number of teeth that are missing
3. The angle between the first tooth after the missing tooth and the sensor with the engine at TDC

These can be figured out with a tooth log and a timing light if you're not sure.

I would like to add to this. (Advice I got when I started in the MS world)

1. You don't need COP. Yes it s cool but why? What is it really gaining you? Unless the motor you are putting the MS on already has it I don't see the need for it. Other than complexity and more parts to wire and more things to go wrong. I would suggest going with as simple as an ignition system as you can. EDIS is really nice at this. It eliminates all the moving parts of a distributor and is reliable as a hammer with only a couple of parts to add to your build. This does predicate the use of a 36-1 trigger wheel on the crank or in my case I used a 72-1-1 on the cam that replaced the cap and rotor.

2. When you say control 4 injectors do you mean individually? If this is the case it again adds complexity that is cool but not needed when batch fire will work just fine. High impedance injectors on a MS makes it easy. Low impedance injectors add some complexity but really are no big deal either. I would suggest that you check the resistance with a multi-meter of your injectors as the terms low and high used for some injectors does not match with what a MS considers low and high. The key here is to actually know the number and not just that it is called a low or high R injector.

Considering you are still learning about MS I would stick with the simplest solutions to your needs at first. Get it running and then explore upgrades to your setup.

This is all from some one that spent 3 years building a MS system that started out as a COP with individual control of each injector. That over time morphed in to an EDIS based system with batch fire injectors. And the car runs great!!! Sometimes simple really is better. Especially when you are learning.

I wouldn't put EDIS on something that didnt' already have it. The 36-1 and the coils are great, there is no need for the EDIS computer itself with the current state of MS.

His motor is COP already, no need to un-COP it. He can run them in waste pairs to simplify the triggering (I did this on a vanos M50 due to the wonky cam sensor).

I agree on the seq/batch, though sequential setups can be tuned to be much smoother on accel, decel, etc.

I am not saying don't do COP or individual injector control. I guess what I am saying is for now keep it simple get it running and then make it complicated. The OP seems to be still learning about MS (as I am still ). There is so much information to learn that I found it best to stick with the simplest solution to a problem and then add complexity as needed / wanted. The worst thing you can do with MS is overly complicate it and not get it running get sick of it and abandon it. I have seen this happen. Had the persons started out simple got it running and enjoyed there car and then learned about tuning and what not first moving in to the more complex systems would have been much easier and more rewarding.

In reply to Paul_VR6:

No, its not COP yet.....I have the stuff to do COP, E30 coils, or the e36 coil brick setups. I'm worried about heat directly under the factory coil mounting location.

Edit: check that, the e36 brick and e30 coils setup all have 4 sets of wiring entering. So, individual coil per plug??

dean1484 wrote: I would like to add to this. (Advice I got when I started in the MS world) 1. You don't need COP. Yes it s cool but why? What is it really gaining you? Unless the motor you are putting the MS on already has it I don't see the need for it. Other than complexity and more parts to wire and more things to go wrong. I would suggest going with as simple as an ignition system as you can. EDIS is really nice at this. It eliminates all the moving parts of a distributor and is reliable as a hammer with only a couple of parts to add to your build. This does predicate the use of a 36-1 trigger wheel on the crank or in my case I used a 72-1-1 on the cam that replaced the cap and rotor. 2. When you say control 4 injectors do you mean individually? If this is the case it again adds complexity that is cool but not needed when batch fire will work just fine. High impedance injectors on a MS makes it easy. Low impedance injectors add some complexity but really are no big deal either. I would suggest that you check the resistance with a multi-meter of your injectors as the terms low and high used for some injectors does not match with what a MS considers low and high. The key here is to actually know the number and not just that it is called a low or high R injector. Considering you are still learning about MS I would stick with the simplest solutions to your needs at first. Get it running and then explore upgrades to your setup. This is all from some one that spent 3 years building a MS system that started out as a COP with individual control of each injector. That over time morphed in to an EDIS based system with batch fire injectors. And the car runs great!!! Sometimes simple really is better. Especially when you are learning.

I'm looking at springing for the 1k cc injector set on diy.....I can probably sell my low impeadance ford racing ones to either mostly or completely cover that cost. The goal here is to not eat through my entire budget, and I could rock the e30 ecu and have it chipped, but my budget hit for that setup would be around $600 for it anyways. So why not run something that should be alot safer(less risk for blowing the m42 sky high) and better for my long term goals?

In reply to madscientistmatt:

thank you, most likely I will just be purchasing new.

The M42 still uses a dizzy or has a waste spark coilpack stock?

1k-cc/min are BIG injectors, shooting for 750hp? What are the details of the rest of the setup?

There are folks who modify these things professionally... email me for details.