I'm going over the P13 pinout and I'm trying to decide if I should go for a ECU cut off switch instead of a fuel cutoff, or both? Anyway what circuits would be good to switch off? So far I'm looking at these...

A7------PGM-FI Main Relay coil
A21-----ICM
B9------Starter Cut Relay

Any suggestions?

 

My ecu always runs bad and studders and sometimes dies for a couple of days after I reset it. Even if I warm it up without driving for it to relearn ect. I would never do the ecu switch, but that's just me. The fuel switch would be a better option I think.

 

I didn't mean literally cut power to the ECU memory, I just meant chose one of the vital circuits from the ECU and add a switch to it. Most likely would be ICM, because the car would not start no matter what. I'm just worried that the fuel cutoff will give a thief too much time. I mean how far can you actually get on built up pressure in the lines?

 

The car won't even begin to start.

 

Well I guess I should just cut the fuel pump from the main and see what happens.