setting idle speed on '88GT

[Philossifer]

Originally posted by Mustanguy
I converted to mass-air,now why would I set the idle any different?

Because a Mass Air flow car uses a "Mass Air Flow Sensor" (MAF) to measure actual airflow into the engine directly at the *THROTTLE BODY*!

A Speed Density car uses a "Manifold Air Pressure Sensor" (MAP) and RPM to *CALCULATE* how much air is entering the engine.

The Speed Density car doesn't know that you opened the butterfly at the throttle body to let more air in, you have to tell it by reprogramming the Electronic Control Module (ECM.)

Since the "Mass Air" car can measure airflow into the engine at the throttle body, it is able to compensate by adding more fuel based on the actual measured increase of intake air!

Get it yet?
Phil