The GM trigger is still not proven as I write this. I was triggering the MS off of the 36-1 trigger wheel that's mounted on the front of the crank. The 36-1 wheel drives the EDIS system.
If your in a hurry I'm have a 36-1 trigger wheel setup on order for the turbo motor and can increase the qty.

Direct cost from the CNC shop

EDIS wheel = $350 ea
Support Brkt = $125 ea
Standoffs = $60 for 4

The reason why I'm still adding a crank trigger wheel is this:

I'm testing a beta version of the sequential system and it need the 36-1 trigger wheel to run it.

The MS sequential system does not support the GM 7 notch crank trigger found on the 4200 (if you managed to find a 2007/08 motor then it does as the later motors use a 60-2 trigger like the LS series engines). Its a s/w thing. Eventually it will happen.

Last edited by efi-diy; 03/03/09 04:52 PM.
51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them