joeymia

iTrader: (6)

Recently I purchased MSD DIS-2 and all the other things needed to get it to work on a EVO. Hopefully I did not leave anything out. I am not getting any spark at all. Not sure what I connected wrong. I think I got the PIN out of the DSM PTU incorrect or I am not hooking up the coils correctly. If someone has experince with this kind of setup please share.

I currently have the following parts:


1991-???? DSM PTU (Ignitor) 7-PIN

MSD DIS-2, PN 62112
http://www.msdignition.com/pdf/62112_62152_frm25956.pdf

MSD GM 2-Tower Coil Pack, PN 8224
http://www.msdignition.com/pdf/8224_frm22622.pdf

MSD Distributorless Tach Driver, PN 8912

I have hooked up everything as follows:

I cut the stock plugs that go into factory coils and connected the following cables

Channel 1 (The left plug)

Red/White (ignition 12v)
Solid Black (ground)
Geen/Black (trigger 1)

Channel 2 (The right plug next to the CAS)

Red/White (ignition 12v)
Solid Black (ground)
Geen/Black (trigger 2)

I took the ignition and ground cables and merged them togther so they won't be unused.

The DSM Ignitor has the following pin out
The order might be wrong. I writing this from memory

IB1 > Connected to trigger 1
OC1 > Connected to White cable from DIS2
VB > Connected to ignition 12v from ignition harness
TAC > Not used
GND > Connected to solid black from ignition harness
OC2 > Connected to Green cable from DIS2
IB2 > Connected to trigger 2

The MSD DIS2 is connected like this

Heavy Red > Battery
Heavy Black > Gounded to the engine block
Red > Ignition 12v from the ECU harness
White > OC1 on the PTU
Green > OC2 on the PTU
2 Brown/Orange > Each cable is connected to one black cable on the coils
Black/White > Connected to one black cable on coil 1
Black/Green > Connected to one black cable on coil 2



The MSD Distributorless Tach Driver

Connected just like it says on the instructions. Can't mess this one up the cables colored



GM 2-Tower Coil Pack

This is where I think I screwed up. The coils have 4 cables, 2 white cables and 2 blacks. I connected them the following way:

Coil 1

Black > Brown/Orange from MSD 12 pin connector
Black > Black/White from MSD 12 pin connector
White > Grounded to engine
White > Gounded to engine

Coil 2

Black > Brown/Orange from MSD 12 pin connector
Black > Black/Green from MSD 12 pin connector
White > Grounded to engine
White > Gounded to engine




PLEASE HELP !!!

Fas4dr

iTrader: (23)

You don't need the tach driver.

joeymia

iTrader: (6)

well i tried with it connected or disconnected still does not work. I got it because the DSM's required it and since I was using a DSM ignitor I did not want to risk it. Do you have any clue what could be wrong?

Fas4dr

iTrader: (23)

Swap the white and black wires off the coils. I don't have the black wires even grounded, just cut short and heat shrunk to the white wires.

DSMotorsport

iTrader: (5)

proboboly a bad msd box. that's extrememly common, as it's junk. I had 3 fail on me before I decided to get rid of the DIS2. My talon ran the same with or without the box anyway, it was just dead weight and extra complication.

I went over your wiring, and it looks all correct to me. if the dsm power transistor was bad, you would still have spark on one of the coils. When that part fails, it's extrememly rare for both transistors to fail at the same time, ususally it fails with one side working and one not.

MalibuJack

iTrader: (5)

Yeah I have to agree.. Although I disagree with the MSD being junk, I do agree that your wiring looks dead on, so either its a bad connection somewhere, or the unit may not be working right.

FWIW I used Ignitors from a Dodge viper instead of the DSM ones on the two motec CDI units I built, but I doubt that would make any difference.

I would check continuity on everything just to make sure you didn't miss something, then check for power and ground to the unit. And quickly check to see if you didn't blow a fuse on the car somewhere (it can happen)

Not sure why you used the Tach Driver, its not needed since our tach signal is driven from the ECU itself unless you have a third party Tach that requires it..

joeymia

iTrader: (6)

your using the same coils as me?

joeymia

iTrader: (6)

Yeah I finally got it working Thank you Fas4dr! Next time I go to orlando i gotta buy you a beer or something I hooked up the white cables on the coil packs instead of the blacks and it started right up. Looks like I had all the wiring correct it was just the damn confusing coil packs!!!!!

Drove around a bit and the car seems to run better. Idle is improved and I haven't experinced any RPM dips. I tested the 2step (launch control) by adding 12v to the blue wire and it works perfect. I set it at 5k and it builds about 10lbs.

Here are some pics. Wiring is still a bit messy but its getting there!!

joeymia

iTrader: (6)

Oh and I also removed the tach driver since you guys said I won't need it.

Fas4dr

iTrader: (23)

I'm glad you got it running. It is a little confusing. Let me know when you come up, I'll definately take you up on that offer.

P.S. Looks great!

joeymia

iTrader: (6)

Going to finish up the wiring tomorrow for the 2 step and my alky pump. Going to hook up the launch control to the ebrake for now. I plan on getting a nice push button for the steering wheel in the future. I am also going to play with the plug gap to see how far I can go. I am using .22 with BPR8EIX plugs.

Have you used the ignition advance feature? I was thinking of using it so when the alky pump turns it can raise the timing by a degree or two.

Fas4dr

iTrader: (23)

No, I was just interested in the MSD for the two step and maybe in the future if I decide to run nitrous and use the ignition retard since I don't have any control over that with the power fc.

joeymia

iTrader: (6)

the ignition retard does seem pretty tempting

joeymia

iTrader: (6)

just thought of something cool. I am going to install another toggle switch hidden and use the rev limiters as a "valet mode" So if I go somewhere where I have to valet (south beach) I will set the RPM limits before I go Should be fun watching them try to go over 3k hehe

bishiboy

iTrader: (10)

I have a similar set-up, only using Chrysler 300C coils (COP), you can open up your gap with the MSD. I'm running .030 with no issues. I've had it as big as .035, pushing 28psi with alcohol injection and still no high rpm missfires even at 8000rpms.