Kirpich

Simple questions.


I'm FI, on approach home is a downhill, and I try to use compression braking, which should cool down the turbo.

1. When I'm using compression braking, my AFRs show 22.5, which is air. Are injectors shut off at that time, or do they still squirt gas?

2. For those of you with EGT gauges, do EGTs drop as you're using compression braking? (Which is using engine gear to slow down.)

Slows2k

Stock PCM equipped cars shut off fuel injectors on closed throttle decel.

Kirpich

So then the exaust mani and hot side of turbo cool down?

negcamber

You might want to post in the FI forum for answers from other owners with turbos.