Autosport Labs

Does it start and run with the MJ disconnected and EDIS module only?

If not, you have other issues than the MJ module...

When you get the misfire and disconnect the MJ, does it run ok on limp home mode?

And here is a pic of the car it is in:

Here it finally is, the MJ on my supercharged Big Block.
I used the Ford Focus Coils

I have the Manuals in pdf. All I did was 'Print' off the website and selected Adobe PDF' instead of paper and VOILA!

Unfortunately too large to attach here...

This sounds like exactly the same symptoms I hed recently with a bad EDIS module.
No misfires when you ran the EDIS without the MJ?

Well it was the EDIS module
Installed a brand new one and the car idles like a champ now...

Another bad used EDIS off ebay story...

Have you checked your trigger wheel and sensor is securely fixed? How does the RPM reading in the software compare to that on your car's gauge (if it's got one)? I actually tried two different sensor and three ways to secure the sensor. Same results. RPMs look same on MJLJ and the Tach. After appro...

Got a complete MJLJ with EDIS8 installed and all wired up. Only problem is: I run it in limp home mode without MJLJ. Starts up fine and runs rock steady idle 10 degrees for about 20 sec. Then the timing starts to jump around and sounds like it's missing, finally gets so unstable after a few minutes ...

So I have the resistance vs. temp profile for the autometer temp sensor I want to use on the Aux Input of the MJLJ.

I also know that the Reference Voltage is 5 Volts.

Now what is the bias resistance to translate the Input Ohms into Input Volts? Is it a 'standard' 2490 Ohms?

Thanks!

DD,

Can you define 'expensive'?

A full brand-new AEM UEGO wideband sensor kit incl gauge is less than $200 on ebay...

What was your idea of a lower price?

Just thinking out loud here, but why not connect a relay to the coil output wire of the MJLJ (along with the coils, of course) and use this relay to run your fuel pump? You'd have fuel being pumped whenever the coils are powered up, but not when they are shut off (either normally or due to over-rev...

Just thinking out loud here, but why not connect a relay to the coil output wire of the MJLJ (along with the coils, of course) and use this relay to run your fuel pump? You'd have fuel being pumped whenever the coils are powered up, but not when they are shut off (either normally or due to over-rev...

Thanks for the replies....

Just bouncing around some ideas.

I think I will try to shut off the injectors at rev limit, seems to be the best way to go...

Ah, got it. Still, you'd have residual fuel pressure in the lines, which might power the engine into a danger zone. is the fuel injection system capable of doing a fuel cut at the injector? You could still do an ignition cut. The plus side is you might get some pretty exhaust flames :) Thanks! In t...