Hello, guys.
Not the new topic, but I'll appreciate any help.
Setup:
- B18C4
- M&W14
- AEM EPM
- AEM 1040
- CBR Coils
Currently we see timing drift (linear) with the rise of RPMs.
There is a lot of info around, but let's try to concretize:
- JPT all to "1-2" position YES/NO?
- JPC all to "1-2" position YES/NO?
- Jumper between "trigger edge" and "Signal Ground" on M&W14 YES/NO?
- Do not use AEM CDI Pencil Coils, due to the different resistance with CBR YES/NO?

Also, if I would not "win" this issue, can I just make my ECU setups making linear corection of the timing in oposite direction?

Thanks in advance

 

JPT1 and JPT2 switched to the 1-2 position. Leave JPT3 and 4 alone.
All JPC set to 1-2 position is correct.
Not too familiar with M &W set-up...
Coils resistance settings will depend on what M & W likes to see attached. You are right about the AEM CDI Pencil coils and their resistance...it does not fare well with M & W box.

 

Ditch the EPM and put a T1 Trigger on it, problem solved.

The jumper between edge and signal ground is simply to switch between falling/rising edge. M&W Pin #9, Pin #10 connected = rising edge, unconnected = falling edge.

 

Thanks for the replies.
a)
- I beilive that my JPT1,2 settings are ok, as theay were switched to "1-2" position, which actually needed to get signal from EPM (VR/MAG)
- M&W by default is "faling edge", so we didn't put down jumper between the pins.
- AEM as per my research is "falling edge" too.
At this point we see that both ECU and CDI are set to the "falling edge" and AEM reads EPM signals correctly.

b)
Next thing that I found, if you will go to the <<cranck/cam/selection wizzard>> for EPM, by default it will be "rising edge"...Can it cause such problems?

c)
Also I've read that the JPC1,2,3,4 (coils) can be in a wrong position, which one is right "1-2" or "2-3"?
Thanks

 

Post your cal file...

JPC jumpers need to be in the 1-2 position.