ctxspy

iTrader: (3)

I've been reading about the boundary engineering kit and all the troubles travis has been having with it.

Is there something specific with what he's doing that is causing his problems, or is it just part of running COPs in a non-oem environment?

In other words -- you guys that have done this yourselves -- have you seen any problems / reliability concerns?

Also -- would any of you be willing to make up a nice pretty harness and sell it

-Tomaj

TravisR

iTrader: (9)

What i'm doing is taking a coil without an internal ignitor, modulating the stock ignition signals, and generating 2 outputs both a tach and a driver signal. That is shoot yourself in the face frustrating evil maniacal project that seeks to consume my soul. (being dramatic with a humor tone here guys )

This however, is fairly easy, straightforward, and seems to be reliable if you can control dwell. Even without dwell control it still does ok. I'm actually planning on making a PNP kit for the Toyota COP's. You may be waiting for too long for me to turn it, but there are some others around here making harnesses. Isn't Savington still doing that?

ctxspy

iTrader: (3)

I think that creating a good looking and more or less PNP kit like what's being discussed here would be a good bet, perhaps even a better idea than your current product.

I know there's a lot of people here with various aftermarket ECUs, so there's definitely a market..

Personally i'm always wary to try these kinds of things because i'm not sure of my abilities and I would also hate to end up buying the wrong parts and having to deal with all the headache, but I'd certainly pay for someone to do the hard work for me That's the same reason i got an MS from Braineack instead of building it myself.

-Tomaj

r808

iTrader: (7)

Just finished reading the whole thread for a second time. The overheating thing is supposedly only during extended high RPM periods. The only way to reduce dwell on 99/00 cars from what I've read is to do so with aftermarket engine management.

Or you could just buy one of these magic dwell reducing boxes:
Boundary Engineering

sprx3

Does anyone know without me opening the handbook if the EMU controls dwell & since im at it anyone gone sequential with their emus?

r808

iTrader: (7)

People have had trouble with 99/00 cars trying to run COPs at the same time as using emanage. You're going to have to read up:
COP? Coil on plug? - MX-5 Miata Forum

hershann

Part of my message is meant for Jason but I am unable to PM him since I do not have enough post count.

just read this 64 page thread about COP - and hoped that it will solve my problem of misfiring at 17psi.

I have a 04 MSM with a EMU piggy back and hoped to implement the Toyota COP system.

I wonder if I will need the dwell reducer circuit to make it work.

Jason - are u still selling the dwell reducer circuit? Pls PM me

hope for insights from the experts!

her shann

poobs

iTrader: (1)

Question :

I am goint to temporarily remove my stand alone ECU so I will have no way to adjust dwell on my COPs

Can I run them off the stock ECU or will they fry ?

It is a 91 1.6

If I do need a dwell reducer - anybody have the schematic etc ?


Thanks

Braineack

iTrader: (62)

lots of people have run them on the stock ecu without reducing dwell.

poobs

iTrader: (1)

Thank you brotha ! It would be nice if I don't have to mess with the COPs any more...

viriiguy

iTrader: (1)

PHEW!!!!
Well it took me 4 days of reading, but I made it thru this thread and the 3 others in the archives. I believe I am now ready to switch Big Gulp from an MSD Digital 2 DIS with GM Twin tower style coils, to the Toyota COP setup.

Why am I doing this you ask? Keep It Simple Stupid... One of my goals for this very much OVER engineered beast is to simplify it without giving up performance. That and it just EATS those MSD coils

Thank you all for the wonderful insight into this mod.

lazzer408

iTrader: (1)

Your welcome.

Mine is still running flawlessly. Hey Brain, weren't you attempting to make a PnP harnesses?

viriiguy

iTrader: (1)

If I ever get Flier129 to call me back so I can pick up my coils... I will be installing this tomorrow and hopefully FULLY removing the DIS sunday and posting it for sale.

viriiguy

iTrader: (1)

Well... That didn't go too well. Made a new harness, double checked everything, turned the crank.. it started ran for 5 seconds and poof the #1 coil started smoking. Since they were used and on a very ugly harness initially, I can't rule out that the Toyota Coil was bad to start with.

*Edit*

Well.. For the record, if you are using an aftermarket ECU, you MUST set it to Falling Spark. My MSD's were Rising spark and it looks like that is what fried the coil.

orion4096

iTrader: (22)

I just finished making a set of PNP COPs for my friend's 95 and figured I would take a pic and post up since it took about half my Saturday and I'm charging $0/hr for labor. I labeled some stuff for someone else I sent the pic to. There's a small project box which bolts up to the firewall to hold the dwell reducer. Not sure if anyone is running JasonC's dwell reducer circuit, but I had it on my car for ~2 years both pre and post MS install with no problems. My cost was helping him clean his garage and listening to his political views.

poobs

iTrader: (1)

You are a good man !!!

Smustang1234

Damn this was along thread.

lazzer408

iTrader: (1)

Whats the 10uf cap for? Smooth out the V+ supply to the coils?

And why the Dwell mod? Was it ever proven to make a difference?

Savington

iTrader: (31)

Jason did the math, there was something like 3v of drop due to stock wiring. The 10k cap solves it.

Dwell mod is a good idea. I inadvertently ran my coils at around 7ms for a while on track with the AEM and popped a couple before I realized what was happening. I know at least one person has popped one running them on a stock ECU.

Braineack

iTrader: (62)

I run these at 2.0ms of dwell at 13.8v I had burnt out the tach output on one of mine playing with a multimeter when I was building my sequential harness a few weeks back, otherwise mine have lasted 4 years now; so at least like 5,000 miles.