Rick, it seems to idle a little low and hunts moderately, and is a little rougher cold than the 2.7. We're at about 1,000 feet here, and honestly I can't tell you if my mechanic here (well versed in MFI) set it up much differently in the tune up than you - I know he tried a click leaner but put it back where you had it on the pump. It appears to idle richer than the 2.7RS - Gus redid that pump as well - but I haven't tested the A/F on either yet. I've got one of Henry Schmidt's manual MFI enrichment controls on the 2.7MFI, and always lower it as quickly as possible - I'm thinking of putting one on the 3.0 to see if that makes a difference.
But once I get above 3,000 rpm, there's no question which engine is in the back!
BTW, do you recall if Gus used the 2.7RS MFI pump space cam, or something different? I know it's marked 3.0RS by hand on the pump.
Are you still finishing the Talbot car, or on to something else? Need a place to stay on your way to Savannah this year?
Bob