Downshift or exhaust brake?
I was just thinking after reading a post about gas vs diesel trucks where somebody mentioned they liked diesel because of the exhaust brake. I've never had a diesel, always gas. If I come up to a long...
Forum Discussion
4x4ord wrote:
Because the turbo charged engine pumps more air per rev it can do more braking at a given rpm then a similar size non turbo engine.
The turbo is NOT making boost while on the exhaust brake! Remember the turbo is driven by the exhaust exiting the engine. Restrict that escaping exhaust and the turbo is not going to spin up.
I supercharged engine would act differently as the charge air is RPM dependent.
In the attached picture I put the exhaust brake virtual gauge and boost gauge is above it. Boost goes up exhaust brake gauge is at zero HP, Exhaust brake HP goes up and boost goes to zero. They do not both go up at the same time.
