Been reading up trying to learn the ins and outs of the GM EFI. Lots to digest. Received my Moates APU1 today. Modded my ECM from info here http://www.gearhead-efi.com/Fuel-Inj...ash+conversion. Need to finish my harness and fuse/relay block then I will be ready to start testing out the sensors and dist signal before I install the manifold. I'm sure I will have plenty of questions for the group when I get it installed. Cal