Stall Speed Probleme Frage an die Automatic Spezi´s

[Grimmjar]

Ich glaub er lässt es länger an.

At present, I'm working up on the amount of rpm this system is going to give me with the TC I'm now using.
I am using an extraordinarily tight TC. Off the nitrous, and at zero boost, the TC stalls at 2400-2700 rpm.
I'm presently up to about .92 of a second on the nitrous before the transbrake is released for the launch. The rpm by that point is 4090 rpm with the MAP maintaining a very steady climb. The turbo I'm using is very big. Even for a V8 it would be considered big. An Airwerks S510/91mm. The turbine side looks to be for a diesel truck. At launch, only about 1 to 1.5 psi boost has developed, but the MAP from nitrous activation onward maintains a very steady climb.
The car actually leaves the line more as a nitrous car and transitions to a turbo only car by the 70-80 foot mark.

To answer your stall question, the tight stall of the TC is presently acting as my rev limiter for the launch.

I am going to slowly work up with the nitrous on-time before transbrake release to see what's on the other side. Stay tuned.

During the launch, The MAP rise is closely tied to the RPM rise. Or, the compressor/turbine speed is already accelerating as fast as it can. In other words, I have the wastegate and BOV clamped down hard and the rpm and map rise relationship cannot be improved upon. If I wanted to massively step up the boost level, say 20 feet out, I couldn't. The wastegate and BOV are already clamped down to give me all that I'm getting.
Once I have the compressor up to speed and the engine is over about 6400 rpm, the wastegate comes into play to control the upper boost level. But, before that point, the wastegate is clamped down hard to get that boost up as quick as possible. The extra exhaust energy that the afterburner would provide would improve on that map to rpm rise relationship. Maybe enough to have the wastegate come into play to actually have to slow down the boost rise rate, giving me some reserve to command a step up in boost level during the 60 foot.