11-11-2014, 10:57 AM
End of the day, you've got positive pressure in the exhaust manifold all the time due to there being a turbine wheel (and in our case a set of vanes) before the exhaust can go to atmosphere... Especially with variable geometry/nozzle turbos, the drive pressure is insanely variable - you really can't tune it for a certain load point.
If you imagine the exhaust gasses as people getting out of places, you've just gotta make it as close as possible to "an orderly walk of people outside" rather than "people running out of a tube station that's on fire"
Exactly as Tom said above...
If you imagine the exhaust gasses as people getting out of places, you've just gotta make it as close as possible to "an orderly walk of people outside" rather than "people running out of a tube station that's on fire"
Exactly as Tom said above...
