Hi guys,

I hard HJ Stuck talking about left foot braking the Quattro to keep the boost pressure up in the turbo in the corners. Has anyone tried this in a real vehicle? It seems to be simulated in LFS, but you have to press the throttle all the way to get the turbo pressure to rise; is this realistic?

Thanks!

Quote from vitali.88 :

... you have to press the throttle all the way to get the turbo pressure to rise ...

Its also annoyng for me too, it wasnt when i was on keyboard. Now im on mouseonly and its pretty unrealistlic. My answer for you is that its not supposed to work like that. The pressures and other things should affect it, like ... Atleast when 6k RPM is on, then the turbo should work a little bit too. Then, the more are RPM's - the more turbo should increase.

the other thing is, u can actually hear the turbo spool up (if the volume is high enough) withoout the boost guage moving at all.

The turbocharger characteristics are not that great... I see it as one of the few things that LFS is not good with.

They seem to base it off of rpm instead of load. If I tweak a car to have a 10k rpm and no power until 8k, it will still reach full boost at the rpm that it did when stock, which is pretty un realistic. another example is bounceing the car off the rev limiter makes full boost... not realistic. I would love to implement some way to base the boost pressure off of load, rpm, and the many other factors involved.

POPSY- you do realize a turbo can be spinning thousands of rpm without creating boost? thus it can whistle and make noise even when out of boost.

And this is all based on my experience with my turbo miata, its not like I don't know what im talking about.

I didnt get the picture, but ... Does the turbo actually start working even on 4000krpm+/- ?

Quote from vitali.88 :

Hi guys,
I hard HJ Stuck talking about left foot braking the Quattro to keep the boost pressure up in the turbo in the corners. Has anyone tried this in a real vehicle? It seems to be simulated in LFS, but you have to press the throttle all the way to get the turbo pressure to rise; is this realistic?
Thanks!

It worked in older Turbo Cars in RL. But the "newer" ones, especially with E-Gas (electronic throttle valve) don´t like it. If you drive WOT and touch the Brake the throttle is closed immediately. But it´s nice (not really) to see (while still standing on the right pedal) how long these Turbos need to spool up again

AFAIR I had to stay on the full throttle, otherwise you would lose too much Boost. But maybe this differs from car to car.

Quote from buedi :

It worked in older Turbo Cars in RL. But the "newer" ones, especially with E-Gas (electronic throttle valve) don´t like it.

OTOH recent turbo cars tend to have smaller turbines to increase torque at low rpms rather than peak power, so they shouldn't take too much to spin up anyway. Also variable geometry and sequential twin turbos are becoming increasingly common.

As for the cars in LFS they have bigger turbines, which, BTW makes sense for racing use where you tend to keep the engine in the upper half of the range.