The E38 ecu is used on the Series 2 VZ (L76), and on all new VE's. The E40 (3 connectors) is used on the HSV LS2's and GTO. E38 is used on LS2 corvettes and the Z06, and alot of other GM cars in the US (not just gen3\4 engines - all sorts of things).....I think (disclaimer)
