MAS qusetion?

The Cobra meter was not calibrated for 24s. The computer was programmed to deal with 24lb injectors.

But yes... you can have a meter recalibrated. There's a link in my signature for an outfit that can do it.
 
You were correct with MAS. However, it's more commonly known these days as the MAF meter. As a matter of fact, I think it's always been a MAF meter on 5.0 mustangs. GM used to call them Mass Air Sensors. Maybe they still do, I don't know :shrug:. Both of them fuction the same...incoming air passes over a hot wire. Guess it just depends on what circles you run in as to the terminology.

In answer to your question: some meters require electronic recalibration (i.e. Pro-M) and some can be setup for other sizes of injectors by changing the sample tube (i.e. C&L)