That's it! I'm effing done with this ECU! Going to megasquirt!

[johnny_b]

If I were to change computers, I would use the '0411 PCM. I've designed and built a plug-n-play crank position sensor kit to fit the L31 Vortec distributor, which makes upgrading to the '0411 very easy and affordable. See attached pics. Basically, the '0411 is flashed with a modified 2002 Express Van L31 5.7 liter tune. The crank position sensor kit, with new distributor, is on par with the cost of a MegaSquirt system.

dave w

dave w this is awesome! I do 3d printing as well.
Anyways couldn't this setup also be used in an lt1 with a modified intake for a conventional distributor? 0411 is multiple coils correct?
I'm very interested in this. do you have a separate thread regarding this project?

Thanks

[dave w]

dave w this is awesome! I do 3d printing as well.
Anyways couldn't this setup also be used in an lt1 with a modified intake for a conventional distributor? 0411 is multiple coils correct?
I'm very interested in this. do you have a separate thread regarding this project?

Thanks

I don't have a separate thread for the crank trigger kit.

If the LT1 intake was modified to accept a conventional distributor, the distributor crank trigger kit I've developed could be used. The 2001 / 2002 Express Van Vortec L31 5.7 liter uses a 4 tooth (4x) crank trigger wheel. When moving the crank trigger to the distributor, the number of teeth on the trigger wheel needs to double. That's why my kit has an 8x trigger wheel.

The '0411 coil on plug ignition system (distributor-less) uses a 24 tooth (24x) crank trigger wheel, which means a distributor mounted coil on plug trigger wheel will need 48 teeth. More Research and Development is needed to make a 48x trigger wheel work in the L31 distributor.

dave w

[Turbo Nasty]

I've had the battery disconnected many times, I just swapped the injectors from bank to bank because I have my wideband on the passenger side and narrow band on the drivers side and I wanted to see if the injectors are consistent and they are. So it's not the injectors. I tried several tunes I had in store today and each one definitely had their own personalities. Weird that a few days ago they all seemed to run identical. However even my known richest fueling tune the one from dyno day ran lean once I started driving it. My fuel pressure is good idling and revving up but I can't see what it's doing while driving. Is it possible to have good fuel pressure and have lack of flow getting to the injectors cause by a clogged fuel filter? I will be replacing the Fuel Filter tomorrow just in case. If that's not it I will have to suspect the Fuel Pump. I think I should mention I'm using an aeromotive fuel pressure regulator with guage right on the fuel rail.