[Diy_efi] 2005 GM Vortec 4200 I-6 ECM

[Phillip Kuhn]

Well, the ecm in those might throw out communication
codes if no other modules are present but it wont
affect the performance any. As far as varying valve
lift the stock ecm isnt capable of doing so and I
doubt it could be done without some serious custom
work on the engine and ecm which isnt really
realistic. The ecm only controls the phasing of the
exhaust cam by controlling an oil control solenoid
that regulates oil pressure to a helical gear on the
exhaust cam.  The newer models switched to a vane
style cam gear but it works in a similar manner. It
wouldnt take much to turbo one and reprogram the ecm
though. And it should be a bolt in type swap to
install the ecm and engine its just a matter of
running some ignition and battery hot wires to the
ecm...........


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