I am suppose to be getting my timing advanced Wednesday, and this speed shop here in the Tampa(Zfever nissan performance shop) area told me they don't have the Consult II Scan tool to dial in the the timing, but they did say they can manually dial it in by adjusting the Crank Angle Sensor and using a timing light. Is this true?

Also the tech said that he is afraid that the advance timing may or may not stay because once the car becomes under load , the computer will reset itself back to its standard timing.

Unfortunately the dealership doesn't want to touch my car because the precats are gone and they said i will need to buy new precats inorder to do the timing. Which is a bunch of crap!!!!!

Long story short, had to remove the precats because they melted.

 

This question would probably be answered quicker and maybe more authoritatively in the 5th gen forum. I'll throw out a guess, though.

If the ecu is using the crank position sensor for timing information and you physically change the position of the CPS, it seems to me that the ecu won't know anything is different and won't try to reset timing.

 

i have a 4th gen and i dont see a crank angle sensor so do you adjust the timimg by computer

 

This is how the SMT-6 advances timing electronically. By advancing the crank sensor signal it fools the ECU into advancing timing.

In theory you could phyiscally advance the sensor a few degrees and not have the ECU throw a code, but if you get to greedy it will throw a Cam sensor code. Also advancing it to much in the low/midrange will cause knock so your limited overall to how much you can advance the sensor's position.

 

is the crank angle sensor the same thing as the crank position sensor? If so i wouldn't think it would change anything to move it since it is slightly rotated when installing the Supercharger.

 

You're thinking of the cam position sensor, but yeah, if you only rotated the crank sensor in its hole it wouldn't do anything. You would have to move it laterally (in a plane normal to the axis of crank rotation) to affect timing.

 

Ok i gotcha. I thought that was labeled the cam position sensor in the directions.

 

You totally lost me there.

 

What I meant was that you would have to change the angular position of the CPS. For example, if it is at 270 degrees (underneath the crankshaft and looking up at it), then you would have to move it to 265 or 275 degrees to change the timing.

 

The crank pos. sensor between the tranny and oil pan is only used to determine engine speed, not crank angle, so moving it would be of no consequence.

 

There's another one at the crank pulley. That is the one that provides the TDC signal.

 

Indeed it does. I thought you were talking about the CPS (POS).

 

CAS timing advance only works on VG30DE/DETTs, the Z shop is smoking some ****. You can only adjust timing via Consult on a 00-up cars.

 

If you change the position of the CAS, you will change the timing, just like if we had a rotatable distributor. How you do it is the question. Maybe some sort of adjustable bracket.