How would I go about wiring this up? Do I need the stock ignitor for this? How does both the coils get the trigger? Any help would be great! Thanks.

 

You will need to purchase an aftermarket ignitor. I had major problems with my FC-3000 and MSD coils wired to my LT-8s without an ignitor because I didn't realize I needed one. You could try PM'ing "C. Ludwig" on this forum, as he is the one that figured out my problems and got me a Haltech ignitor.


Also, both coils are triggered at the same time in a wasted spark mode, just like stock.

 

So you can't just use the stock ignitor?

 

My HI-6 is wired directly to the Microtech...no problems here. You just need to use the right inputs on the HI-6.

Red wire to IGN, thick red and black to battery, white wire to trigger (grey/blue on LT8s harness).

 

thanks aaron, but what do you do with the microtech trigger if you have two hi-6's?

edit: and does it matter if your microtech was setup for stock coils and sensors or the microtech coils and sensors.

 

The Microtech uses one signal wire for the leading coils like stock, so you can use stock coils, or in your case, just split the one signal wire to each box.

 

ahhh ok thats exactly what i needed to know. So you say we need an ignitor and aaron says we don't? Thats the last thing I need to know.

 

any idea?

 

I've set up a couple MTs with CDI boxes and both needed an ignitor. Travel over to the MT forums Link and you will hear two things from the factory techs. a) Don't run a CDI box. They are evil. b) They won't work anyway. What you will here from others is just what you are hearing here. Some work and some don't. If they don't work by directly connecting them to the MT trigger then install an ignitor in-line and you should have no problems.

The basic problem is that the CDI boxes like to see a rising edge trigger while an ignitor (stock coil) wants to see a falling edge. Most EMSs are programmable and can trigger on a rising or falling edge. The MT is not user programmable and deafults to trigger on a falling edge. Some CDI seem to trigger fine on the MT falling edge. Others don't.

What I would do if I were intent on running a CDI is to first wire up the stock coils. Run the car like this to ensure that you have all the other bugs worked out and if there is a problem it's not the CDI. Once it's running well enough swap in the CDI box of your choice without an ignitor. See what ya get. You'll know if you have problems immediately. If you do have problems pick up an aftermarket ignitor and swap it in-line bewteen the MT output and the CDI.

As far as wiring two seperate coils to fire the leading plugs. If you are using two CDI boxes for the leading (is what I read from the title) then simply split the trigger wire, either directly from the MT or from the ignitor is used, to the two CDI boxes. Each box would fire one coil. They still fire at the same time in a waste spark configuration. Or you could use one box with the output from the single box firing both coils.

We've run two different cars to 16-17 psi on the stock coils without a CDI without ignition issues. Unless you are set on running some serious boost the CDI won't provide a serious performance advantage.

 

Thanks for the info it helps alot! I'm planning on running 20-22lbs of boost on a t61 with water/alky injection and from what i'm hearing with water injection the limmit of the amount of water you can inject is directly related to the ignition and how beefy it is. So can you use the stock ignitor with this setup if an ignitor is needed? Thanks again.

 

my lt8x doesnt do this it seperates the leading coils, and has it own built in ignitor. so you would need 4 serperated CDI boxes in my application.

 

Probably could. At one point I started to tear one down and look at it but never finished. I'm a Haltech dealer so I just order the ignitor from them.

 

Nothing. Just connect both boxes trigger inputs to the same leading output on the Microtech.

Talk about massive overkill though.

 

These replace the ignitors....different car though. Hondahater.Call Freddy...

 

oh thanks guys for the replys. I didn't see these. Anyways yeah aaron it is kind of overkill but with water injection I want to beable to add enough water to really make a differance at 22psi on a t61 so from what i've heard a good ignition system is needed. Apex, who is freddy?

 

http://ourworld.cs.com/talvendi/id196.htm