I having a big jump in timing (advance) it jumps from 30 to 80+ when the engine is above 3500rpm and can not find the cause, I am using the stock cas and a 2.0 microsquirt with 3.21 firmware thanks for the help!!

 

With the stock CAS, I've seen that happen if the 2nd trigger polarity is wrong compared to the primary trigger.

Ken

 

The polarity of the wires? or in the software?

 

More than likely the wiring could've been swapped on install. VR sensors are either rising or falling edge. If they're wired backwards it most definitely will have symptoms like described.
Actually I think it may be MS that has a great article on it..

Yep! found it!

http://www.megamanual.com/ms2/pickups.htm

 

thanks for the help!!!

 

Either. If you got the wires backwards, you can just change the edge it triggers on in software.

Ken

 

I tried all I can but the problem still there here in my msq, thanks for the help

 

can you get a composite log of the problem occurring?

Ken

 

Ok I will as soon I can thanks Ken

 

here is the log,I tested with other microsquirt and the problem is gone but if I reinstall the original ecu the problem returns