MembersPage/SVIScirocco (2010-03-16 19:17:50)

Car is a MK2 1982 VW Scirocco, 1600cc 8-valve K-JET engine with a BLT turbokit installed probably somewhere in the late eighties.

Engine has already been prepared for EFI by replacing

the K-JET injectors with EFI injectors using custom injector seats and BBM fuel rail.

Next step is to get VEMS control the injectors and the ignition coil with distributor ignition.


TRIGGER OPTIONS

Option 1.

Stock distributor is fitted with an optical sensor, giving one pulse per firing, approx. 90degress BTDC for each cylinder.

Without camsync it needs distributer for ignition of course.

This was the first trigger pattern first implemented (around the same time as missing tooth).

vacuum hoses would be removed from the dizzy of course.

Option 2.

Mount a 60-2 trigger wheel on the crank pulley and fabricate hall sensor brackets..

Yes, this option would allow wastedspark DIS ignition.

Option 3:

4-1 on crank (3 pulses, 2 of them are appr 60-90 BTDC; pattern is 90,90,180 crankdegrees). This is the simplest, smallest toothcount pattern that allows DIS.


Trigger testing

Files are [here]

like [Testing.txt] and [test.vemscfg]

We'll reproduce this setup.

vems_primarytrigger.PNG

vems_miscoutput.PNG

NOTE THAT YOU HAVE AN OUTPUT COLLISION ! Ign/6 used for 2 functions. It is NOT GOOD ! (validate in vemstune does not warn about this ???)

vems_ignoutputs.PNG