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Rec counter MP9 conversion
Posted: Wed May 11, 2016 6:31 pm
by dorian.bmw35
Can you please help me , i change from carb to Mp9 and kept the old wiring with dash, I cannot get the rev counter to work. It used to be connect to the coil on the carb engin.
Re: Rec counter MP9 conversion
Posted: Wed May 11, 2016 6:46 pm
by Torker
dorian.bmw35 wrote:Can you please help me , i change from carb to Mp9 and kept the old wiring with dash, I cannot get the rev counter to work. It used to be connect to the coil on the carb engin.
MP9 rev counter shares the signal from the distributor trigger (pin 2) with the ECU. I don't think the 5V signal will be sufficient to drive an older rev counter. One solution would be to ditch the 3-pin coil and fit a normal 2-pin coil with a TP100 module. You will be able to pick up the trigger from there again.
Re: Rec counter MP9 conversion
Posted: Thu May 12, 2016 1:31 am
by PapaJo
Torker wrote:dorian.bmw35 wrote:Can you please help me , i change from carb to Mp9 and kept the old wiring with dash, I cannot get the rev counter to work. It used to be connect to the coil on the carb engin.
MP9 rev counter shares the signal from the distributor trigger (pin 2) with the ECU. I don't think the 5V signal will be sufficient to drive an older rev counter. One solution would be to ditch the 3-pin coil and fit a normal 2-pin coil with a TP100 module. You will be able to pick up the trigger from there again.
Use a 2 pin coil wired to a TP100 and then you can pick up the pulse for the rev counter on pin 7 on the TP100.
Re: Rec counter MP9 conversion
Posted: Thu May 12, 2016 6:46 am
by -=sT3V3=-
or...
solder your rev counter wire directly to the 3 pin coil.
Search for it on here, the 3 pin coil basically has a coil driver built in, you just need to hijack one of the 2 wires to the coil bit for rev counter input.
"1" in the picture
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 7:31 am
by dorian.bmw35
-=sT3V3=- wrote:or...
solder your rev counter wire directly to the 3 pin coil.
Search for it on here, the 3 pin coil basically has a coil driver built in, you just need to hijack one of the 2 wires to the coil bit for rev counter input.
"1" in the picture
, i cannot open the pic
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 8:08 am
by Torker
dorian.bmw35 wrote:-=sT3V3=- wrote:or...
solder your rev counter wire directly to the 3 pin coil.
Search for it on here, the 3 pin coil basically has a coil driver built in, you just need to hijack one of the 2 wires to the coil bit for rev counter input.
"1" in the picture
, i cannot open the pic
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 9:50 am
by Robz
I have a quad module with input signals from Dictator ECU and I battle to get my REV counter on my Polo classic 6n to work. I had to buy a tachometer and connect it with my Dictator ECU just to have some sort of RPM info. Now I'm no expert in wiring ECU's and learn everyday so maybe someone can help me out as well.
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 10:48 am
by panic-mechanic
What does a quad module look like. Don't know dictator well enough. Surely it only runs in wasted sparkmfashion though so two actualy spark outs from dictator?
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 11:35 am
by Robz
Yes there are 2 input signals from the dictator and yes it is wasted spark bud.
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 11:57 am
by panic-mechanic
But hang on your polo should have had a rev counter out from the mp9. Would have been pin9 a green wire.
If you can locate that you should be able to connect it to the dicktator rpm out.
If that does not give you an rpm reading sometimes all it needs a a 2k2 resitor to a 12v line and it works. The mk3 needed that so likely the polo would need the same.
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 12:10 pm
by Robz
panic-mechanic wrote:But hang on your polo should have had a rev counter out from the mp9. Would have been pin9 a green wire.
If you can locate that you should be able to connect it to the dicktator rpm out.
If that does not give you an rpm reading sometimes all it needs a a 2k2 resitor to a 12v line and it works. The mk3 needed that so likely the polo would need the same.
Yes sir alles was mp9 and a bud of mine told me I needed a resistor, but never knew exactly what he was talking about.
Where will this green wire be? Still connected to the MP9 ECU plug?
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 12:13 pm
by panic-mechanic
Of course I have no idea where it would be currently but yes likely still connected to the mp9 plug if somebody did not cut it off.
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 12:27 pm
by Robz
panic-mechanic wrote:Of course I have no idea where it would be currently but yes likely still connected to the mp9 plug if somebody did not cut it off.
Will have a look as I only disconnected the plug from the MP9 ECU(Sold the ECU) and haven't cut of any wires from the plug. Was looking on mp9 wiring diagrams and on there they show that there is no wire in pin 9. Will let you know if I can locate the wire.
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 12:42 pm
by panic-mechanic
Don't know what document you are using but trust me pin 9 is the rpm out and it's usually green.
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 12:54 pm
by Torker
panic-mechanic wrote:Don't know what document you are using but trust me pin 9 is the rpm out and it's usually green.
Might be different on various models but when I buzzed out the wiring on my Velo there was no wire on pin 9. I made a plug and play Dicktator harness (basically plugged the Dicktator into the MP9 harness) and the rev counter still worked on the original wiring. As a matter of fact I just finished a plug and play setup for a guy in Namibia this morning and on a Golf the rev counter doesn't get the rpm signal from the ECU. What we found where we installed the Dicktator on top of the original wiring, as soon as you cut the original wire on pin 2 on the dizzy the rev counter stops working (with MP9 plugged out and running on Dicktator). We only use the tacho out to drive the older type rev counters.
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 1:09 pm
by Robz
Torker wrote:panic-mechanic wrote:Don't know what document you are using but trust me pin 9 is the rpm out and it's usually green.
Might be different on various models but when I buzzed out the wiring on my Velo there was no wire on pin 9. I made a plug and play Dicktator harness (basically plugged the Dicktator into the MP9 harness) and the rev counter still worked on the original wiring. As a matter of fact I just finished a plug and play setup for a guy in Namibia this morning and on a Golf the rev counter doesn't get the rpm signal from the ECU. What we found where we installed the Dicktator on top of the original wiring, as soon as you cut the original wire on pin 2 on the dizzy the rev counter stops working (with MP9 plugged out and running on Dicktator). We only use the tacho out to drive the older type rev counters.
The wiring diagram was actually from a velocity so yes it may differ from my mp9 wiring diagram. And really hope I can actually just plug the green wire into my Tacho out if it has the green wire or if I can find it.
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 1:18 pm
by panic-mechanic
On citi it gets the tacho signal from the dissy and then converts it to drive the tacho. So on those basically i would normally put the aftermarket management tacho out into the wire that would normally have come from the hall sender and everything happily works again.
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 1:55 pm
by Robz
Panic , I would just like to clarify 100% by what you meant with "all it needs a a 2k2 resitor to a 12v line". Between the Dictator ECU tacho out wire and the pin 9 green wire I should add a 2k2 resistor where both wires should connect to each other?
Re: Rec counter MP9 conversion
Posted: Wed May 18, 2016 6:16 pm
by panic-mechanic
Firstly connect it just straight and see if it comes alive.
If not then take a 2k2 resistor and join the one end to that line and the other end to a switched 12v + line.
It's called volt up - it raises the signal strength basically.
Re: Rec counter MP9 conversion
Posted: Mon May 23, 2016 7:46 am
by Robz
So I connected the green pin9 wire(There was one) straight the the Tacho out on Dictator and Wualla it works just fine, but then my cluster started making the most terrible beeping noise because of oil pressure sensors not connected.
Still need to get the OEM sensors for my polo and see if it will fit on the AGU's oil filter housing so I can get rid of that beeping. So thank you Panic, really appreciate your help!
Re: Rec counter MP9 conversion
Posted: Mon May 23, 2016 8:19 am
by panic-mechanic
No worries.
The sensors all scre into the same thread yes so will fit.
Re: Rec counter MP9 conversion
Posted: Thu Oct 18, 2018 11:15 am
by Old School Quintin
Torker wrote: ↑Wed May 18, 2016 12:54 pm
panic-mechanic wrote:Don't know what document you are using but trust me pin 9 is the rpm out and it's usually green.
Might be different on various models but when I buzzed out the wiring on my Velo there was no wire on pin 9. I made a plug and play Dicktator harness (basically plugged the Dicktator into the MP9 harness) and the rev counter still worked on the original wiring. As a matter of fact I just finished a plug and play setup for a guy in Namibia this morning and on a Golf the rev counter doesn't get the rpm signal from the ECU. What we found where we installed the Dicktator on top of the original wiring, as soon as you cut the original wire on pin 2 on the dizzy the rev counter stops working (with MP9 plugged out and running on Dicktator). We only use the tacho out to drive the older type rev counters.
I still have my original coil in what do i need to do to get the rev-counter working again
Re: Rec counter MP9 conversion
Posted: Fri Apr 05, 2019 2:48 pm
by Robz
Had a Polo classic 1999 old spec with Pin9(Green wire) as the tacho wire that I connected straight to dictator's RPM out and worked fine.
Now have the 2001 model with millenium dash and the wiring to the ECU is totally different to my old polo.
This time it had no wire in pin9, but played around and found a green wire coming from inside the car and connected that one to the RPM out of the dictator and worked fine.
Sent the car in to get Boost pipes, DP & branch done and after that, started the car up and RPM didn't work anymore and oil buzzer going crazy.
I went through all the earth wire and all seem to be fine.
Re: Rec counter MP9 conversion
Posted: Tue Aug 13, 2019 6:44 pm
by Madalathusi
Hi guys, can I also ask for your help (advice) with the following, mp9 fuel injector rail wiring, where does the brown wire with black strip connect to, it comes from the intake manifold from a switch like right next to accelerator cable, also have a CAM position sensor with only one black wire, where does it connect to ECU,..
Thanks for your help in advance
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