Originally Posted by
verticalspin
LRP what you are quoting here is correct for the basic 407 and GX/P models. The GXi does not have an HMU anymore as everything is controlled by the EEC (Electronic Engine Control) which in turn controls the FMU (Fuel Metering Unit).
Here's what the 407 GXi Manufacturers Data states:
Hope this helps.
Thank you vertical spin. I caught on to that as well when I read the comment by LRP and went straight to the GXi’s manufactures data to see what the differences were. Thank you for pointing it out!