SpeedPro (FAST) EDIS Unit

[Dean77]

I am looking for someone who is succesfully running the SpeedPro (FAST) EDIS Unit especially anyone who is running this unit with GM LS1 coils. Is there anybody out there?? If you are running the box and not using LS1 coils what brand of coil are you running?

Thanks in advance,
Dean

 

[bruce]

I'm running an eDIST on my GN.
I'm using the LS1 coils.
Neat ignition system.
I'd posted a write here about it, if you have any questions holler.

 

[Dean77]

Thanks Bruce,
What type of cam sensor are you running? Are you using an inductive pickup style crank input? Did you get a minimum RPM level that you had to stay above or all the coils would not fire consistantly?

Thanks again,
Dean

 

[bruce]

Originally posted by Dean77
Thanks Bruce,
What type of cam sensor are you running? Are you using an inductive pickup style crank input? Did you get a minimum RPM level that you had to stay above or all the coils would not fire consistantly?
Dean

Stock crank and cam sensors.
I wired things so that the original ignition module was used.
Instead of installing the coils, i put a 1K ohm resistor in each of there place. Then I tied all 3 module sides of the 1K resistors together and used that as the EST signal.

The ECM doesn't generate a EST signal until 250 rpm. so you have to use the module to get the low rpm, none est signal.

I bought a connector from Spina (Caspers), and found a oem ignition module connector so that I could piggy back the eDIST into the oem harness with a min of wiring.

 

[Red Canyonero]

We're about to run the system on an oddfire 4.3 V6 Typhoon, and I have plans to put it on my TTA next season.

We have an MSD distributor with the flying magnet setup for a cam signal on the Typhoon.

I was hoping someone (Bruce??) had the pin outs for the coils.. i have the wiring for the whole thing written out, just don't know which pin goes to what from the coils, other than the trigger for each one.

TIA if anyone can help...

Brian Green
89 TTA

 

[bruce]

Originally posted by Red Canyonero

We have an MSD distributor with the flying magnet setup for a cam signal on the Typhoon.

I was hoping someone (Bruce??) had the pin outs for the coils.. i have the wiring for the whole thing written out, just don't know which pin goes to what from the coils, other than the trigger for each one.

This is funny or sad, Les P., called MSD just the other day and they said they didn't make that distributor.

Anyway, looking at the harness side connector, with the retaining clip up, and at the end with the terminals
A-B-C-D

A+B are grounds.
C is trigger
D is power

Did you get the email that I said I liked your dad's car?.

 

[Craig Smith]

FWIW we have an LS1 on our dyno at the moment with this setup on it. Works flawlessly and this engine makes about 450 hp. If I could find a way to use these coils with a 2-step rev limiter, I would put this system on my bracket car in a heartbeat.

 

[bruce]

Originally posted by Craig Smith
FWIW we have an LS1 on our dyno at the moment with this setup on it. Works flawlessly and this engine makes about 450 hp. If I could find a way to use these coils with a 2-step rev limiter, I would put this system on my bracket car in a heartbeat.

I don't see why that wouldn't work...
Use the point leads in conjunction with the EST.
The MSD stuff used to have a rather large working voltage for triggers. I'm pretty sure I had one working of TTl voltages once upon a time.

 

[Craig Smith]

Here's how I'm viewing this, maybe you have a solution for me.

The points lead goes to the eDist, and from there, I'd go right to the coils. So we have an ECU, an eDist, and the coils themselves, none of which are capable of two-step rev limiting. I leave off of a transbrake, and for the consistency that bracket racing requires, a two-step is a must. How would you make this happen? There's a missing puzzle piece that I haven't figured out yet.

Thanks for your input... I appreciate it.

 

[bruce]

Point lead or EST are just different names for the same lead.

The only difference in all this is after the stutter hits it may take the engine 2 revolutions to resynch with the cam sensor.

Your ecm puts out a standard coil output, right.

Maybe you need to send me a FAST ecm, and multistep, and I'll sort thru all this for ya <G>...
(SEFI, non W-B, please).

 

[Red Canyonero]

Maybe you need to send me a FAST ecm, and multistep, and I'll sort thru all this for ya <G>...
(SEFI, non W-B, please).

bwhhahahah

Did you get the email that I said I liked your dad's car?.

shoot, maybe... i know I had to email you about something again soon... make sure you have my addy down as
syclone160@yahoo.com

I had a good working @home addy, but it disappeared with the AT&T takeover.

Anyways, I'd like to make up a small document about the eDist, for anyone to install it on their GM ecm vehicles, especially geared towards TR's & Syty's. I could use your expertise in this dept, considering the EST issues with OEM ECM's.

The distributor was made in both oddfire and evenfire designations, but not for stock OEM HEI setups. I *may* have a spare one. I got 3 when we picked up our bundle of ASA motor parts. The odd or even thing didn't matter, since we were just using it for a cam sensor.

I did need to also talk to you about something else... i'll email you about it from home later (regarding some code).

Brian Green
www.chitownsyty.com
89 TTA

 

[Trbobuick]

craig...the 2 step for the lsi coils exsists: harlan from harlan shift lights is building them. go here: http://harlan.sketchy.net/store/store.html
go to "under construction" and its there. i have seen it at work on his inconn twin turbo fire hawk. he had 5 psi at 4500 rpm!!!


Brian

 

[bruce]

Originally posted by Craig Smith
Here's how I'm viewing this, maybe you have a solution for me.

The points lead goes to the eDist, and from there, I'd go right to the coils. So we have an ECU, an eDist, and the coils themselves, none of which are capable of two-step rev limiting. I leave off of a transbrake, and for the consistency that bracket racing requires, a two-step is a must. How would you make this happen? There's a missing puzzle piece that I haven't figured out yet.

Thanks for your input... I appreciate it.

As I recall the 2 step has two leads that intercept the coil lead wire. All it does is open the coil/point lead, to interupt the spark.

The eDIST when it loses the coil/point signal will stop working just like the coil did in the first set up.

Even if the multi uses a single wire and grounds the signal for the points it should still work, least in my mind.

Could you scan me the instruction sheet, and I'll look at it to double check?.
nacelp@bright.net

 

[Craig Smith]

This is where I don't see it working. There is no 2 step rev limiter anywhere! What is it that would interrupt the signal? There's nothing in the ECU that does it, nothing in the eDist, and nothing in the coils themselves, and those are the only components in the system. To my knowledge, no one makes a device that would even fit anywhere within a system of this type that would do 2-step rev limiting.

The only place a device of this type could go would be in series with the points wire from the ECU to the eDist. It would have to be a box that passed the points signal through normally until the desired limit RPM was reached, at which point the device would interrupt the input signal to the eDist. The big problem with this is that every time you dropped an input pulse to the eDist, your timing would change by 90 degrees. The eDist fires its 8 outputs, A-B-C-D-E-F-G-H, every time an input pulse is received. It doesn't know the position of the engine between cam sync pulses; it assumes that all crank pulses are happening on 90 degree intervals. Garbage in, garbage out.

Bottom line that I see here is that a 2-step on a multi-coil system will require an ignition system specifically designed to operate multiple coils AND have a built-in 2-step. The eDist simply doesn't fit the bill.

 

[bruce]

Originally posted by Craig Smith

Duh, OK, I see what your saying.

Then, a simple box with say 8 Power Mosfets that intercept the point signals to the coils. For the Gate have a little interface to *see* the 2 step signal. eDIST keeps synch, and point signal so it doesn't get confused, and the coils independently see the 2 step.

How's that?.
I'm still open for a FAST ECm to refine this idea <g>...

 

[Trbobuick]

CRAIG,

At least e-mail harlan. he works with bob baily on a lot of stuff and has cracked a lot of gm software and operating systems. e-mail him and ask him if his rev limiter could be used as a 2 step.


Brian

 

[y2khawk]

http://harlan.sketchy.net/store/2step/proto2.mpg

If i knew how you were connected on the coils, and the firing order it could be reset for you setup i'm sure.

Doesn't effect the operation of the ECM. no sink is lost as it deals only with the EST lines

 

[JeffB]

i've got an LT1 w/optispark plus a bank to bank FAST... has anyone run a distributorless setup on an LT1 with a FAST?

 

[Craig Smith]

Yes... there is another post in this forum about it... you should take a look.