I have been looking at a lot of different baes maps online trying to figure out what the hell is the proper set up for second gen ignition compents on a Haltech. I have seen three different trigger angles used 65, 89, and 90 in that order of popularity. I have seen three different tooth offsets 11, 5, and 3 in that order of popularity. I have seen charge times of 3.5, 4.5, 3.8, 3.1 in that order of popularity.

So what are the PROPER settings for using stock FC ignition componets with a Haltech??

 

If you read all the information around, and corolated with what you see on the maps, you will see that the tooth offset will depend among a few other things, possition of the CAS when incerted either according to Mazda or the "i have no clue what im doing" method the HITman described. Then this will give you, depending on rotational position of the CAS.

Then, there's the ignition output, the coils and igniters, which depending on what your mod list is and power levels are it will vary depending on how much spark output power you will need. I have talked to the HITman personally and he's told me he's done applications with stock 2nd gen coils and igniters with Dwell times of upto 5.8mS, and he says they can take it.

And finally, when talking about FCs and their stock ignition components you need to remember to connect the Ign1 to the leading, Ign2 to the T1 coil input, and Aux.Out (green/black) wire, to the Toggle Select wire on the Trailing coil pack. Set the Aux.Out to 5V, and you're good to go.

 

The Aux. Out voltage should be 0-5v NOT 0-12v???

What impact will the varrying charge times have on the performance of the ignition?? If most of the maps that I have seen have 3.5ms and 5.8ms works why isn't everyone using 5.8ms??

As for choosing the tooth offset, you could in theroy just stab the CAS anyway you want and the play with offset number and a timing light until you achive top dead center?? Is that correct?

 

How does setting the Ignition and Home signal to "rising" or "falling" effect the performance of the ignition?? Will changing these setttings effect the tooth offset and charge times or are these settings sepcific to the type of hardware that you are setting up the Haltech to operate with??

 

Longer the dwell, longer / better the spark.
Here's the problem...
You're going to hit a point where TOO MUCH DWELL if going to overheat the coil.
So you don't want it so high that it kills the coil itself!
For reliability sake, you want the dwell as low as possible without running into misfire problems (at high RPM's usually).


That is correct.


-Ted

 

Don't.
The system was designed to work under "falling".
If you change it to rising, the ignition timing starts to change as the RPM's rise...
Thus, the actual ignition timing in degrees you program into the Haltech will NOT be the actual ignition timing the engine sees.

This does not affect tooth offset...well, you ignition timing will not be accurate.
This does not affect charge time.

Yes, it had to do with how the magnetic pick-up's sensors are designed and installed.
In this case the stock CAS for the FC3S.


-Ted

 

Yes, 5V, not 12V.

Like RETed said, and i said earlier, higher charge time will give you a more poweruful spark, a lower dwell will give you weaker spark. So, if your power goal is 300-400hp then a charge time of 3.5-4.5 will work, if you're looking to build a drag only car, with 600hp you can try and shoot for 5.8mS. But then again, if you do shoot for 500+ hp i would use an aftermarket ignition system all together anyway.

 

So as a rule of thumb
Trigger angle: 65
Tooth off set: 11
Aux out to: ignition toggle
Aux out voltage: 0-5v
Gains to: 1
Filters to: 0
Trigger and Home to: Falling
Dwell to:3.5-4.5ms

Is there anything that I am missing??

 

With E6X i start out with Gain 0 Filter 1, the rest is correct.