Quote:
Originally Posted by wstar
Agreed. I just find it hard to believe that what my ears are hearing during engine braking is just restricted airflow pumping through the cylinders with no combustion.
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Back in the early 80's (before FI was common) they sold mod kits that did this. There was an inline fuel switch, an RPM sensor and a throttle switch. When you lifted off fuel was cut to your carburetor provided you were above the preset stall speed. It's standard practice on modern cars with fuel-injection and manual transmissions.
Automatics don't always implement this as the transmission must be in full lockup mode for it to work.