Hello,

So I've been looking into boost for quite some time and I took the car out today and noticed something that I'm not sure if its normal...

The car is a Porsche 911 Turbo S 2012.

So I noticed that when I have the car in Sport Plus mode, and I press the gas to the floor, I see 14 PSI. BUT if I take off Sport Plus mode, and leave it without any sport mode on, and press the gas to the floor, I see 17 PSI all the time, does not go down from 17.

Is that normal? Shouldn't it be the other way around? Shouldn't I be seeing 17 in Sport Plus as well?

If this is not normal, what can be causing this?

Thank you very much.

 

Bump!

Anyone please?

 

From my understanding no it's not normal. The turbo S should definitely be at 17 psi in sport plus mode.

 

Mario, the car will not go full boost at all speeds/RPMs. I'm trying to decipher this as well, but I suspect you're at a different rev range in Sport Plus than when you are in Sport, and this is leading to the differences in boost. That said, a pull from 60mph-100mph with the throttle wide open should give you the full 1.2 bar in any mode.

 

I will try that out!

I did a pull from 25 mph to around 85-90 mph only and didn't see full boost... Jumped a lot but mostly 14 psi... But I will try that you said!

The weird thing that I can't understand is why in normal mode, without any Sport mode on, I see 17 psi always... But the car doesn't feel as aggressive as sport plus and 14 psi...

 

Since you're seeing full boost in some modes, that seems to rule out a leak or any other physical issue...

 

That's what I thought, but if it isn't a physical issue, then the problem would be ECU related? I would have to make some logs to find out?