[olddog]

No experience with Edelbrock's EFI, but I do not see a mass flow sensor. If correct then it must be using either speed density or Alpha-N strategy. May be capable of either.

Speed density uses a MAP and TPI and rpm to calculate or estimate the air flow into the engine. Large valve overlap causing very low manifold vacuum becomes unmanageable if the manifold vacuum is lower at idle and then increases off idle for a while before it starts to drop again. Then you have no choice but go to Alpha-N strategy or mass flow. Milder cams no problems.

I still like mass flow the best.