Please help need tacho signal

kit · Post by **kit** » Wed Mar 27, 2013 10:51 pm

Set up a dfi waste spark x2 coils need to obtain tacho signal to old style tacho
Thanks

DrDeath · Post by **DrDeath** » Fri Mar 29, 2013 11:20 am

I used an msd tach adapter from the optical dizy sensor output. http://www.msdignition.com/products/acc ... _adapters/
The model you need depends on weather you use a hall sensor or a optical.

ProZac · Post by **ProZac** » Fri Mar 29, 2013 6:03 pm

If its a starion tacho you're wanting to run, it's very simple to modify them to accept a 12v square wave. Most aftermarket ECU's can output this, or if you're using a mitsy ignnition module, it probably has a pin for it.

kit · Post by **kit** » Fri Mar 29, 2013 11:46 pm

I had a msd unit worst thing I had for my $25,000 stereo terrible feedback noise

fugazi · Post by **fugazi** » Sat Mar 30, 2013 2:54 am

Shitty stereo.... rofl

kit · Post by **kit** » Tue Apr 02, 2013 2:41 pm

need to connect the starion tacho to 2 haltec dfi coils with waste spark and with haltec module
hope this helps
any more ideas?

OLD FART · Post by **OLD FART** » Tue Apr 02, 2013 4:24 pm

fugazi wrote:Shitty stereo.... rofl

Definately incorect the doof doof machine in that car has won many awards :)

fugazi · Post by **fugazi** » Tue Apr 02, 2013 4:26 pm

Just kidding... of course!

panda · Post by **panda** » Tue Apr 02, 2013 5:07 pm

kit wrote:need to connect the starion tacho to 2 haltec dfi coils with waste spark and with haltec module
hope this helps
any more ideas?

I'm planning to do the exact same, meaning starion tacho to twin Haltech coils. I was hoping to achieve this by using a twin coil tacho interface that takes a pulse signal from each coil & then outputs to the tacho. I have one ready to install soon (I think it came from a Galant VR4) but have yet to prove whether it works.

ProZac · Post by **ProZac** » Wed Apr 03, 2013 1:27 pm

Are you guys running aftermarket ECU's?

What sort of ignition modules are you using?

It's a nice tidy solution to modify the starion tacho to accept a 12v square wave. If you've still got the original body-loom intact you can re-use the original wire.

Can post pictures of how to modify the tachometer, involves soldering a jumper across a resistor, and (possibly) putting a pull-up resistor inline, but that will depend on the type of ignition module or ECU the signal is coming from.

ProZac · Post by **ProZac** » Wed Apr 03, 2013 1:33 pm

Are the twin post coils down the bottom of this page:

http://www.haltech.com/product/accessories/ignition/

the ones you're wanting to use? If you can get some more information on them, like primary winding impedance, and inductance that would be cool. If they're similar to the EVO 1-3 twin post coils (and I'll bet they are) I'd suggest you use a mitsubishi J722T ignition module. These are pretty beefy little units. I've seen them accept dwell times adequate to supply enough current and a beefy enough spark to support 400hp+ with no worries, that's with factory EVO 1-3 twin-post coils. Plus, these ignition modules have a tacho output signal which can interface to your starion tacho with the aformentioned modifications.

It's exactly I'm working it on my red MPI starion.

Austarion

Please help need tacho signal

Please help need tacho signal

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