useful vr6 coilpack information
Moderators: jsmcortina, muythaibxr
useful vr6 coilpack information
Hey everyone, I've been doing some testing with a 2001 vr6 coilpack. I'm currently using an old AT style computer power supply that is able to supply 10 amps on the +12v rail. The 12v rail isn't up to snuff anymore, and it puts out only 11v on a good day. But anyhow, that's irrelevant.
The pinout is as follows:
1: +12v
2: coil 1 signal (cylinder 1 + 4)
3: coil 2 signal (cylinder 2 + 5)
4: coil 3 signal (cylinder 3 + 6)
5: gnd
The interesting thing about this setup is that you do not have to ground out the signal pins in order to fire the coil... Instead, you need to apply a +12v signal in order to charge the primary coil. Once the primary coil is charged (dwell is on the order of milliseconds), once the +12v signal is removed, it will discharge the spark on the secondary coil (and make a spark on the output).
Since this setup will require a little bit different circuit to interface it to the MS, I'm currently designing a circuit for this purpose. I'll keep you posted on my findings, as they may be useful to others trying to MS newer VW's
The pinout is as follows:
1: +12v
2: coil 1 signal (cylinder 1 + 4)
3: coil 2 signal (cylinder 2 + 5)
4: coil 3 signal (cylinder 3 + 6)
5: gnd
The interesting thing about this setup is that you do not have to ground out the signal pins in order to fire the coil... Instead, you need to apply a +12v signal in order to charge the primary coil. Once the primary coil is charged (dwell is on the order of milliseconds), once the +12v signal is removed, it will discharge the spark on the secondary coil (and make a spark on the output).
Since this setup will require a little bit different circuit to interface it to the MS, I'm currently designing a circuit for this purpose. I'll keep you posted on my findings, as they may be useful to others trying to MS newer VW's
Just an update -- I successfully interfaced my coilpack with the MS board. Again, this coilpack is from an '01 GTi vr6 with the 5 pin connector.
Oh, I was wrong about the +12v signal on the signal pins -- it can be +5v, too
I've got a prototype circuit designed that seems to be working. I'll see if I can draw it out and post it here, later.
Oh, I was wrong about the +12v signal on the signal pins -- it can be +5v, too
I've got a prototype circuit designed that seems to be working. I'll see if I can draw it out and post it here, later.
Here we go -- this is a diagram of my interface. Nothing really fancy. The resistors I used were 1k.
I think I"m running 3ms dwell and the spark looks good. Anyone have any suggestions as to what the dwell should be?
I'm using MSI v3... so r26, r27, and r29 are connections soldered to the top of those resistors (top, when looking at the board with the "megasquirt" silk screen at the bottom)
I think I"m running 3ms dwell and the spark looks good. Anyone have any suggestions as to what the dwell should be?
I'm using MSI v3... so r26, r27, and r29 are connections soldered to the top of those resistors (top, when looking at the board with the "megasquirt" silk screen at the bottom)
take a look at this pdfmajic wrote:Anyone have any suggestions as to what the dwell should be?
http://www.bosch-motorsport.com/de/aktu ... ls/3x2.pdf
Re: useful vr6 coilpack information
Sorry for reviving an old thread. Can anyone confirm if the VR6 coil pack is a logic coilpack?
Been trying to find out with no luck.
Thanks
Been trying to find out with no luck.
Thanks
Re: useful vr6 coilpack information
OK. Never mind my previous post. this video answers the question.
You can see the coil pack is really two sections, the three coils are located on top and the ignition module is attached below. So I suspect it should be able to take a low current signal?
https://www.youtube.com/watch?v=AB01jYh0HJw
You can see the coil pack is really two sections, the three coils are located on top and the ignition module is attached below. So I suspect it should be able to take a low current signal?
https://www.youtube.com/watch?v=AB01jYh0HJw
Re: useful vr6 coilpack information
vr6 coil is a logic level 5v signal
1990 bmw 320i daily driver with m20b25 ms3 sequential fuel, 380cc injectors, d585 coil near plug, home made cam sync, launch control, fan control, vss, homebrew egt logging what's next????
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Re: useful vr6 coilpack information
Works with led with pullup, tc4427 with 5v pullup and with 3x/pro outputs.