Well after 1800 mile round trip I can say that the Megasquirt 3 with full sequential fuel and spark control works well.
So we now have a fully tunable EFI system to run the 4200 without having to put up with the GM drive by wire crap.
The only part that I have not tested yet is the VVT timing control - others have and say its working well. Later after I get the 4l80E installed and running I'll swap the stock cams into the engine and test the VVT.
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
