LSTEG96

Don't say sorry, THANK YOU. I would have never found this thread.


and 19secbest is right, the teg does do that. too bad it was stolen on monday.

pcguy760

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSTEG96 &raquo;</TD></TR><TR><TD CLASS="quote">Don't say sorry, THANK YOU. I would have never found this thread.


and 19secbest is right, the teg does do that. too bad it was stolen on monday. </TD></TR></TABLE>

LOL, glad my hour of searching was of help haha

DaX

iTrader: (1)

It should work with any MSD box. On the 6A, the required trigger wire is the white one.

pcguy760

Thanx Dax, I will give it a shot and see how it works out...

Update : Ordered the transistors from Digikey, guess I will get the resistors and project board from good old Radioshack. Will let you guys know how it all turns out when I get it all done


Modified by pcguy760 at 2:32 PM 11/6/2008

pcguy760

Well I went ahead and built the circuit and wired it up - car fired right up! No difference at all compared to the stock ignitor except ... I DO NOT have to deal with that ignitor crap anymore!!

Thanks to Dax for the help concerning wiring it to my MSD SCI-L. Here is pic of me just testing it. Now I need to wire up the tach signal and put it in a pretty box with some JDM sticker on it hehe




Modified by pcguy760 at 9:43 PM 11/9/2008

DaX

iTrader: (1)

Thanks, glad it worked out for you.

holset b18c

dax could your build one for me im willing to pay for you time and parts!! matter fact i will take 2 just to be safe!! jojoaka420b@aol.com

jetspeedz

+1 please pm me with a price thanks

DaX

iTrader: (1)

Just thought I'd post up that I am not really interested in building these any more. I don't really have time - you know...growing up and getting married will do that.

I'd like to say that these are very easy to build and install. Most if not all components should be able to be found locally, maybe with the exception of the ZTX857. I believe GSRrussell still has a few, so PM if you can't find one. They are not expensive by themselves, but you usually get nailed on shipping, making the ZTX cost over $10 when all is said and done.

Good luck to everyone taking on this project.

batboyvaj

I still have some spare parts to make another one. I ordered 2 of each just incase. PM me

Turbo-LS

iTrader: (4)

Sorry to beat a dead horse but just made my igniton trigger and works great! Will make more if anyone needs one

Todhunter

Glad it worked out for you. Does DigiKey still carry the ZTX transistor?

Turbo-LS

iTrader: (4)

Yeah

2k.civic.si

Yes it can be used with the msd sci-l....but that circut is a bit outdated and pushes to much current back into the ecu. I can build you one with a better circut design.

Todhunter

Post the new circuit. Of all the ones I built, I never had any issues or had anyone I built the circuit for tell me they had an ECU damaged from using this circuit. That's not to say that it isn't happening - I have been out of the game for a while.

Can you explain why it pushes too much current back to the ECU? I thought the only wire connecting to the ECU is an ECU output.

2k.civic.si

you clearly dont understand how that circut works...and no im not posting the new schematic.

Todhunter

You're right - I clearly don't...which is why I asked for you to explain. I am an ME, and did just well enough in my EE classes to get by.

Fair enough if you don't want to post the circuit - I wasn't sure if you were keeping it proprietary or not. FYI, I am the guy that started this thread and posted the circuit...just don't post under the old name any more.

2k.civic.si

you did not create the circut and J&S posted it on HT before you did. lets give credit where credit is due. although i dont think john from J&S ever really put that circut through testing it was just something he threw together to try. my uncle who has been an EE for 30+ years took one look at that schematic and immediately said what was wrong with it and why i was having issues with the ecu. the new circut he came up with after reverse engineering the icm and tracing back in the ecu how the circut works came up with the new schematic i am testing now. sadly nology already has a high current icm replacement but it is overpriced for what it is.

Todhunter

Don't get me wrong, I'm not trying to take credit at all for coming up with the cricuit - look at the picture I posted - it still says created by J&S, and modified by me. Actually I don't think John ever posted it here, I originally got it from PGMFI.org.

Anyhow - care to explain why it doesn't work well? This is a technical forum - just thought since you seem to know about it you wouldn't mind sharing. I hope you can see I'm not trying to be a jerk or anything - just trying to learn.

About the Nology replacement - all the aftermarket ICM's were pricy when I built mine - building this was relatively cheap, and fun while keeping it DIY.

Turbo-LS

iTrader: (4)

You have a better circuit but your not even building it so did you come up with it ? Mine seems to work just fine

2k.civic.si

Its due to 1k ohm resistor that goes to yellow/green from the 12v. That circut was also designed with a ztx857 which in reality was a poor choice and heats up under high load. a mosfet would be more appropriate here or a high amperage transistor can be used. the circut i have sitting in front of will handle more amperage then the 15amp fuse that powers the circut. the ztx857 is only good for 3 amps.

fyi hard switching a transistor will give you a nasty elbow on the sine wave...this is what will ultimately burn them out....you can hard switch a mosfet and still get an almost square wave out of it.

Todhunter

Cool. Again, I am no EE, but I always wondered why that resistor was there. I know transistors work as amplifiers, but do you know why there are two transistors, and why they are different? Why can't the ECU directly signal the MSD to fire the coil? Or am I getting in way over my feeble non-EE head...?

2k.civic.si

there is constant voltage through the 1k and 4.7k ohm resistors to the npn...the ecu does a pull to ground on yellow/green causing the 2n2222 to pull to ground for the ztx857....the ecu cant directly drive the msd as it wasnt designed to handle the current....it also wont handle the current for the ztx857 which is why the 2n2222 switches the ztx857.....basicly its like the ecu is a very low amp switch kicking on a higher amperage switch which in turn kicks an even higher amperage switch....there is much better ways to do this.


The layers of an NPN transistor must have the proper voltage connected across them. The voltage of the base must be more positive than that of the emitter. The voltage of the collector, in turn, must be more positive than that of the base. The voltages are supplied by a battery or some other source of direct current. The emitter supplies electrons. The base pulls these electrons from the emitter because it has a more positive voltage than does the emitter. This movement of electrons creates a flow of electricity through the transistor.

The current passes from the emitter to the collector through the base. Changes in the voltage connected to the base modify the flow of the current by changing the number of electrons in the base. In this way, small changes in the base voltage can cause large changes in the current flowing out of the collector.

DRAGLS

If anyone is interested here is the
bosch igniter part number 0227100124.

Only thing that's missing from it is a
tach output.

1- coil ground
2- engine ground
4- 12v switched/ coil +
5- ecu trigger

JeeaccordSIR

Hey guys!
you should have a look at this link! If you were wondering which company is making NOLOGY ProFire ICM and actual HONDA OEM ICM(NEC,OKI)..

It is a german company called HUECO.

their part number for the OEM style module is 138068

they have almost 500 different ignition control modules!!!

I did not have time to figure out wich one was exactely same as NOLOGY PROFIRE ..

*And I asked Jeff,sales rep./ NOLOGY USA:-If the ProFire ICM would work fine with my Accel 300+ Digital ignition controller and external coil and the only answer He gave me was:NOT COMPATIBLE.
They have a really bad customer service(from my experience...)

Hope you guys will find something on that link..


http://cat.hueco-automotive.com/inde...alog=2&lang=uk