MS3-Pro and MSD Atomic Transmision Controller.

[mancusogti8v]

Here is the scenario:

LSX 454 Engine (crate). Can with OEM ECU with custom flash, with DBW TB.
Transmission 4L80E with MSD Atomic Transmission Controller (PN 2760).
Goint into 4x4 truck.

Need to choose a SEM. My experience is with LS2 engines,MSPRO and TH400 trans (no electronics ).

I want to use MSPRO EVO with the Harness from Diyautotune.

Now, I know I have to switch to a cable TPS.
For the MSD to work it needs: +5V/ground from the TSP, RPM signal and VSS.

For the RPM signal: "Connect to tach output on MSD Ignition or coil (-) on inductive ignition.
Note: Will accept 5V(+) used to trigger GM LS coil packs"

Can I use MSPRO Tachout (Pin24/Diyauto) to provide RPM signal to MSD?

Since I have to switch to a cable TB I can just wire the MSD to the TB and not use it for the MSPRO.
And use speed density as control algorithm. Can MSPRO operate solely on MAP without a TPS signal?

For VSS, the MSD control box is expecting a "GM VSS signal" which I think is a VR sensor (40 pulses/tooth ring).
Can I use the same VR sensor and piggyback the signal for both the MSPRO and the MSD box?

Luis Roberto Cordero

[jsmcortina]

The Tach signal should work fine. You can probably share the TPS and VSS between the two boxes.

James

[Six_Shooter]

If you don't want to share the TPS, you should be able to set up a Generic PWM output of the MS3PRO, to follow and mimic the TPS.

There should be a similar way to have a speed output as well.

[mancusogti8v]

Thank you for the input.