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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 09-11-2011, 11:04 PM   #1
AdamBath
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M54 Megasquirt questions

The M54 from my 01 330ci which I no longer own is going to find a new home soon, in my 87 635csi. I've already built my Megasquirt, it works properly, but I have some other questions that I'm having a hard time finding the answer to.

The crank position sensor is Hall type, I know this much, but I need to know what the cam position sensors are... Are they also Hall type or are they VR or some other type? The Megasquirt can run pretty much any type of sensor but if it's not Hall I'll have to adapt the signal to make it think it's a Hall.

I'm running the MS3X setup, will be running all of my coils and injectors individually, no wasted spark etc. Does anyone have a pinout for the coil's? I'm going to have to wire those into the harness so it'd help if I knew what each pin does, the MS3X should be able to run them no sweat AFAIK.

I'm running the VANOS and DISA off of a separate controller board, even though the MS3X can run VVT. I'm uncomfortable with running alpha code on my daily drive so for now I'll use hoveringuy's controller board and when the code becomes more mature I'll run the MS3X's VVT stuff.


Also, related but not specifically to the M54, running a MAP sensor instead of a MAF is acceptable on a non-turbo car correct?

I will also eventually build a turbo setup for it though
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Last edited by AdamBath; 09-12-2011 at 10:25 AM.
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Old 09-11-2011, 11:30 PM   #2
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I am researching MS stuff as well for the e30 Subscribe for info
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Old 09-12-2011, 01:00 AM   #3
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What are you doing to your E30? My E30 is getting the M30B34 from my E24, with a Garrett T04 turbo. Will also be Megasquirted.
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Old 09-12-2011, 01:55 AM   #4
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You need to get a Bentley manual, it has all the wiring info you will need, as well as mechanical, which can be pretty important in a swap.

Secondly, there is a thread on BFc started by SmallSnail about MS...it's a really good resource.

Personally, I have no experience with it, so I can't comment much further.
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Old 09-12-2011, 09:57 AM   #5
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iha
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You need to get a Bentley manual, it has all the wiring info you will need, as well as mechanical, which can be pretty important in a swap.

Secondly, there is a thread on BFc started by SmallSnail about MS...it's a really good resource.

Personally, I hvave no experience with it, so I can't comment much further.
I have a Bentley, it's beyond confusing reading their charts(and does not seem to have a pinout of the coils) , and has absolutely no mention of what type of sensor the cam sensors are.
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Old 09-12-2011, 09:07 PM   #6
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I'll send you some info in the morning that should help a little, condensed wiring charts and pinout tables.

For the greater audience, I'll be working on converting my M54 to MS3/MS3x as well, using a gutted ECU as a plug-in interface. It looks like with the new expansion board it should be almost plug-n-play, with the exception of the coil drivers, and I'm hoping to recycle the ones from the ECU.
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Old 09-13-2011, 02:03 AM   #7
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I'll send you some info in the morning that should help a little, condensed wiring charts and pinout tables.

For the greater audience, I'll be working on converting my M54 to MS3/MS3x as well, using a gutted ECU as a plug-in interface. It looks like with the new expansion board it should be almost plug-n-play, with the exception of the coil drivers, and I'm hoping to recycle the ones from the ECU.
So this is the type of thing I have to look forward to in retirement.

Inching closer...
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Old 09-13-2011, 09:47 AM   #8
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Sub'd. I'm using megasquirt on my m20 swapped 2002 so any info you come across would also be useful.

Would also be great to have a pnp for the m52/54 so I could turbo the e46 with a custom kit.
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Old 09-13-2011, 10:45 AM   #9
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Newest Megasquirt supposedly has VVT (VANOS) in the beta software. I will get it working on my standalone VANOS controller which has been bullet-proof the last several years and then transisiton to MS VANOS control. DISA should also be easy.

Also talk in the Megasquirt forums about native support for S54 cam wheels.

Standard features include multiple maps (alternate fuel), traction control, accelerometer support, data logging, canbus.
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Old 09-14-2011, 12:05 AM   #10
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Quote:
Originally Posted by AdamBath View Post
What are you doing to your E30? My E30 is getting the M30B34 from my E24, with a Garrett T04 turbo. Will also be Megasquirted.
Just finish my 2.7L Stroker m20. Now need to tune it and what not. It will be turbo next year after i fix the suspension and interior...
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Old 09-15-2011, 11:30 AM   #11
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Whoo.

My friend has been wanting to PnP Mega Squirt my car for a while now. His turbo m20 e30 is currently on ms3

GL! can't wait for you to set it up!
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Old 09-16-2011, 05:38 AM   #12
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Don't listen to hoveringuy, he is all talk!
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Old 09-16-2011, 06:28 PM   #13
AdamBath
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Finally found my coil wiring harness, will make things MUCH simpler.
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Old 09-17-2011, 12:00 AM   #14
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Don't listen to hoveringuy, he is all talk!
No shit! He needs to put-up or shut-up!

http://m54megasquirt3.blogspot.com/
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Old 09-17-2011, 07:19 AM   #15
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I follow with interest, would love to get MS on my car.
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Old 09-21-2011, 11:12 PM   #16
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Now idling nicely on Megasquirt3.

http://m54megasquirt3.blogspot.com/
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Old 09-24-2011, 09:15 PM   #17
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the cam sensors are also hall... look it up here on page 26...

http://www.bmwmotorsports.org/BMW_docs/m54x5.pdf
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Old 09-25-2011, 02:13 AM   #18
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running alpha code on my daily drive so for now I'll use hoveringuy's controller board and when the code becomes more mature I'll run the MS3X's VVT stuff.
You'd be surprised. MS2 is still open source (MS3 is not AFAIK), so there are people working on getting the idle control working /properly/. A friend of mine is running said code on his W201 with great results.

Apparently you can get standalone dual VANOS controllers if you want to do that (Seattle Circuits).... and... oh yah... looking through one of the threads here it looks like the DME uses more than simply the engine speed to toggle DISA (something you may want to think about as you try to eek more power out of the engine).

My biggest question is: what are you going to do for a throttle? Does MS3 do drive by wire? Gonna use an M52TU intake w/ its slightly smaller throttle body? Or?
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Old 09-25-2011, 01:25 PM   #19
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My biggest question is: what are you going to do for a throttle? Does MS3 do drive by wire? Gonna use an M52TU intake w/ its slightly smaller throttle body? Or?
I think the easiest route would b to use a TB off an e36... I think turner motor sports makes an adapter kit for it if I remember correctly...
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Old 09-25-2011, 03:56 PM   #20
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I intially ran a generic M50 throttle body with an adapter plate. It worked fine and actually didn't hurt power to have a slightly smaller bore.

I also developed an e-throttle controller for the stock e-throttle and electric gas pedal. I ran that for a while and it worked fine, too.

Now I have custom throttle body that uses M54 mounting and bore, but with the M50 TPS sensor. It works great, too!

I drove around with the Megasquirt3 this weekend and it worked just fine. I have an extra port triggering my Vanos controller circuit (triggers with load over 15% and coolant over 110 degrees F) and it integrates just fine.

Need to tune VE tables now. Anyone have the stock timing chart??

Last edited by hoveringuy; 09-25-2011 at 03:57 PM.
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