Thank you, Joe. Since the tachometer is driven by logic that gets its information from the class 2 serial data bus, may I assume that changing the tachometer output crankshaft pulse scaling in {G1204} won't affect that?

Back to my original question, I still haven't learned whether simply turning on the Electronic Throttle switch in the F-body column of {G1207} Vehicle Platform Options is all that is necessary to enable DBW (notwithstanding the compatibility horror stories) on the Camaro tune. That's so easy!

It will be so much fun to bench test everything! The more I get straightened out before I start, the less fun I'll have, but I'm sure there will still be plenty of fun to go around.