coil on plug conversion

[ASword]

The AEM unit doesn't require you to use all the channels... so a 6 cyl engine just leaves two channels unused.


Its definitely a good idea to be able to test "off the car". Since you have electronics skills, I may take advantage of that and eventually ask you some questions. I'm a software guy and my electronics knowledge is rather minimal... hence my preference for the low power side of the circuit!

[spada]

hey guys, there's a coil on plug kit for the KL on ebay right now in case anyone was wondering. looks awesome!

[stoker100]

thanks for the heads up but i couldn't find it, what are the keywords?

[WhiteDart]

the seller is xtremethings or something to that effect. All it is is 6 stick coils. Nothing to actually run them.

[stoker100]

ahh lol gotcha.

[ASword]

C'mon guys, can't you cough up a link or some accurate keywords at least? I've tried ever variation I can think of but see nothing like what you describe.

[WhiteDart]

Thats bizzar, i can't seem to find it now. Even under the sellers name he doesn't have anything up for auction now. I saw it there yesterday. Ill keep looking through the day to try to find it again.


Edit: his username on ebay is xtremethings-performance and now I recall a note at the bottom of the aution that he reserved the right to end the auction early. So im guessing he ended it and thats why I cant find it again. It looked like it was simply stick coild from a motorcycle. This guy also has a website which he sells stuff for the KL from but I cant provide a link because he isn't a vendor.

[stoker100]

ok just an update i finally have everything together on some verobaord and running, right now im soaking it at 5000rpm (bench test), its not driving any coils yet but it will be soon. For now theyre just turning on LEDs to see the delay from input to ouput. in a minute ill be attaching a coil to one channel to see how it goes (only a inductive charge but on the car it will be capacitive). ill post some pics and vids later tonight.

[blac_shine007]

Steve,

This is why with my trial I am using ALL shielded Tefzel wiring in the engine compartment. If you use this type wire and then terminate one end as I showed you then it will eliminate the interference (in theory) This is why it is used in this same way in jet aircraft. If a jet experiences noise from induction then it could even be deadly.

Your going to LOL on this one, but my buddy with a Volvo 940 turbo w/ MSNS and coil packs was having a problem with interference. Couldn't figure out why it would pop and break up after 4k rpm. So he ended up wrapping the crank sensor wire with aluminum foil and wrapped it up with electrical tape from the sensor all the way back to the firewall to solve the problem. It worked better than we all had imagined. He has no more popping. I'm a cheap fella and I don't plan on spending big money like that. Just an idea for ya.

[ASword]

For now theyre just turning on LEDs to see the delay from input to ouput.

LOL, you'd better not be able to see they delay! Otherwise you're going to find yourself with a rather unfortunate ignition timing retard... might retard your timing into advance on the next cylinder.

[stoker100]

by delay i mean at rpm's above that possible of any engine. i only tested it on our old cro and saw no delay at all but will do further testing tomorrow with a decent cro to see the delay, according to my calcs it has a slightly shorter delay then the MSD 6A CDI which is exactly what i intended for. heres some pics and a quicktime vid as promised:

http://members.optusnet.com.au/dstojko/cop2.JPG
http://members.optusnet.com.au/dstojko/cop3.JPG
http://members.optusnet.com.au/dstojko/cop1.3GP

pics/vid were taken on my mobile hence the quality, please dont be foolish and ask why it appears to go backwards! also ignore how messy the board is laid out, this was a prototype that went through about 10 design changes before i got it running how i wanted so yes its a bit of a mess, the next one will be much neater and the one after that will be a professionally made PCB. if your wondering why there is a delay between ch1 and ch6 its waiting for a reset signal (im not going to go into it but just take my word for it).

[shameem]

I tried to make an EDIS system like that for a 4 cyl in a wasted spark config - so basically take the ecu trigger and split it into 2 channels based on the hall sensor output. I used 2 "and" gates and an inverter - if the ecu trigger is high and the hall sensor is high (cylinder 1,3) then fire 1,3 - the outputs went to 2 hei modules and then a coilpack. I bench tested it and it seemed to hold up fine. I havent actually tested it on the engine yet - the project was put on the backburner due to some events and circumstances.

Can you give more details about the circuit schematics - since 4017 is a decade counter - are you resetting the counter with hall output and clocking the count with the ecu trigger?

My only suggestion would be to use a TTL counter instead because CMOS has high latency and *may* cause delays.

[fredio54]

Check out this thread :

http://www.diyefi.org/forum/viewtopic.php?f=8&t=71

A few ideas from Nissan motors for you there :-)

[stoker100]

im not going to go into too much detail about what componenets im using because im making something unique and dont want people to copy this project because of the time ive spent on it (normally i dont mind). thanks for the link fredio54, its quite interesting but i want to only use the original sensors on the car to keep it as simple as possible, if i change sensors then i can no longer use this on my stock ECU.

[fredio54]

im not going to go into too much detail about what componenets im using because im making something unique and dont want people to copy this project because of the time ive spent on it (normally i dont mind).

It's a good thing Linus Torvalds didn't think like that! :-p

thanks for the link fredio54, its quite interesting but i want to only use the original sensors on the car to keep it as simple as possible, if i change sensors then i can no longer use this on my stock ECU.

I realised that, just thought you might enjoy seeing how nissan does exactly the same thing. The wheels are drop in ish anyway, perhaps you coul use the superior data of the nissan wheel and feed the probe ecu what it wants to see ;-)

I have to ask, if you are so set on the stock ECU, why are you worried about 14k rpm? That's a bit of a stellar figure anyway in terms of practical use in a car. On a bike, sure... but car? hmm