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Official LH2.4 EZK Wasted Spark Conversion - Installation Instructions

Also getting a signal from the launch control

What do you mean by this?

Every board i send out is fully tested and I haven't had a single one be DOA. Is your coil and power stage confirmed working? Is that wiring properly done? There seems to be some confusion above regarding the J702T pinout.
 
I have 5v from one of the launch control connections. My wiring is correct, is it a 5v signal to the power stage when cranking the engine?
Don't know why I didn't think of it before, I swapped my aw71 with a w55 manual tranny at the same time as installing the wasted spark. Think I might have missed something there. I'll be back at the car tomorrow and will have another look.
 
Finally got around to having a good look, always learning! Sorry about my noobness :oops:
Is the wasted spark basically a "switch to ground"? Is there a way of confirming if it is operating correctly or if it's receiving the correct info from the EZK with out an oscilloscope?
Engine's cranking, fuel and suppression relays are fine and switching, fuel pump primes, replaced the J702T power stage with another one that was confirmed working, also tried a Subaru power stage, Coil is in working condition and I've checked the wiring at least 20 times and still no spark :-(
I read somewhere that, with accessories on, the crank angle sensor is meant to have ground, 5v & 12v across the 3 wires. I have ground, 3.5v & 0v, could this be because I damaged the EZK when installing the wasted spark board or maybe a faulty CAS? Any way of testing without an oscilloscope?
 
The wasted spark board simply takes the stock coil trigger signal and diverts every other pulse to two outputs. It is grounded when nothing is happening. When it goes high, it triggers the power stage to start charging the coil. When it then goes low, the power stage turns off and the coil makes a spark.

"ground, 5v & 12v" across the crank angle sensor doesn't sound right. It should output a sinusoidal signal of increasing amplitude with increasing RPM.

You mentioned that you did a manual swap. Does that car have a neutral safety switch that you have to bypass?
 
Hey Karl, I've bypassed the neutral safety switch. I have ran a wire from the TAC of the power stage to the relay coil that has replaced the ignition coil, and the other side of the relay I have the stock blue switched 12v and ran a cabel from there to the new coil. Is that correct?
 
Sorry mate, that description was after a few beers :) This should be a bit clearer!

BUCHKASPARK.jpg
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I just put this "tach driver" together for a local guy with a spark board. It's just a standard relay with the flapper and spring tossed out and a transistor/resistor stuck inside.

photo.JPG


Can you elaborate on this for the electronically challenged like me?

Does it work like this?

<a href="http://s338.photobucket.com/user/turbobrickspics/media/Dummycoil_zpsb5ad7d52.jpg.html" target="_blank"><img src="http://i338.photobucket.com/albums/n413/turbobrickspics/Dummycoil_zpsb5ad7d52.jpg" border="0" alt=" photo Dummycoil_zpsb5ad7d52.jpg"/></a>
 
Hey Tried PM'ing, keeps giving an error code every time.

:e-shrug:

I was wondering if my board got lost in the mail, i never got to lay my hands on it here @ napa.

B
 
That's strange. Your board definitely got shipped with the others. If you can hang on until next week, I can ship you a replacement from the new batch.
 
the miata 1.6l coils from NA body miatas work perfectly, and should be cheap. they also plug into stock ignition wires. I'd use the ignitor off that too. it has a 4cyl tach output on it that plugs into the factory volvo tach and works.

Haveing some problems. Please help me out here. Will the J702t ignitor work with a bosch .....407 coil?
 
Most likely. Shouldn't matter what ignition module you use as long as it ground fires the coils :lol:

What's the problem exactly?
 
Most likely. Shouldn't matter what ignition module you use as long as it ground fires the coils :lol:

What's the problem exactly?

I've asked Karl aboit the same. Can we bu sure that the J702t ignitor will fire the bosch 0221 503 407? The problem is that it dont fire...I have signal from Karl's board to the ignitor. I've made a conector so I can change between the J702t ignitior and the bosch 203. I have 4 bosch ....407 coils.( 3 used and 1 new.) Then I thought it might the signal that came from the Buchka board. So I took my spare LH2.4 gold box and soldered in another board that I had from Karl. But I did look at the wrong picture... and soldered the spark output to a pin on the main contector. (see the green wire here:http://sphotos.xx.fbcdn.net/hphotos...0337_100000615636342_1229996_1660470111_n.jpg)
What it did to my system was something bad.... It was impossebile to get the engine fired after..... So I discontcted the battety, again.... and took out my backup fuel box(962). Then it started.... I probably fried something in it. :-( Now i dont have any working backup. I also tried with the bosch....203 ignitor ( have 2 used ones )....But now fire there either...
I have pictures, and I'll try to post them tomorrow.... I was abit feed up when all went bad....
I did follow the installation point to point... so I dont know where I did wrong or what didn't work...
 
anybody that can supply me with the connectors for the mazda miata ignition module and the bosch 2x2 coil? nobody in norway sell it anymore, and i have bought the parts... but cant get anything happening before i get my hands on some connectors...
 
I salvaged the plastic part of the Bosch connector from a scrap loom. The metal spade connector inserts are readily available.
 
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