*This is a work in progress*
The 1227749 was used mainly in turbocharged applications, but also in some Quad4 vehicles as well.
The most common applications are the turbo Sunbird GT and the Syclone/Typhoon
1987-1990 2.0L OHC PFI Turbo
1987-1988 2.3 DOHC PFI
1991-1993 4.3L V6 PFI Turbo
Updated service number
This ECM has two injector drivers, and uses both injector drivers in peak and hold mode in the L4 applications, while saturated mode is used in the V6 applications. The wiring is slightly different between these two modes and when using this ECM as a retrofit for other applications attention needs to be paid to this.
$58 (Turbo L4 and V6)
In many cases the bin files from this ECM can also be used in the 1227730 and 1227727.
There is also custom code available based on $58. This has been modified to extend the VE and spark tables along with WBO2 closed loop fuel control and logging directly through the datastream. For more information on this code $59, please visit www.code59.org.