I have a question about mounting the Crank Position Sensors themselves. My system is an EC2 computer on a GEO 1.3L engine with two crank sensors, one for the A computer, and a separate one for the B computer.

Do you see a downside to having both the A and B crank position sensors mounted on a bracket so that they BOTH are reading the same toothed wheel on the engine crank pulley? Can the EC2 B computer run and adjust itself to work if it is receiving the crank sensor signal coming from a differently oriented crank sensor?

BACKGROUND: In my recent tuning efforts I have found that the 'B' crank sensor teeth is causing the engine to run rough when going above 1800 RPM. I have a small pulley that has replaced the stock GEO harmonic balancer. The main pulley has the teeth cut into it for the A computer and A CPS to read.  There is also a secondary set of teeth specifically for the B CPS/B computer backup combination. On the same shaft but closer to the engine.

1. A computer connected to A CPS, reading A teeth - smooth/OK
2. B computer connected to B CPS, reading A teeth - smooth/OK
3. A computer connected to A CPS, reading B teeth - rough as a cob
4. B computer connected to B CPS, reading B teeth - rough as a cob

My Sherlock-Holmes-ian deduction says the B teeth are out of spec and contributing mightily to the engine roughness. And I am thinking: just forget that second set of teeth and use the primary A/teeth for both sensors (A & B).  But I wanted to check with more experienced folks before pursuing something like this.

Thanks in advance,

Mike