OMG - GT3 Preview at Silverstone this Wednesday. Get to meet God - Andreas Preuninger

[GrantG]

Originally Posted by _rocket

So, it's still a muffler, not a bypass? I wonder where the extra 14 horsepower is going to come from?

Well, that's only 3%. It could come from the slightly different exhaust, intake, ECU tuning, compression, cams or even just culling the best performers from the DYNO test (hope that's not the case).

[Turbo4ever]

Originally Posted by buttons123

In terms of the dual mass/single mass flywheel there are a number of factors that need to be taken into account:

Weight
As the single mass is lighter this will alter the dynamics of the car. *This affects other components such as the suspension set-up and is therefore not as simple as just replacing the dual-mass with a single-mass flywheel.

EMU
The Engine Management Unit (computer that controls things such as fuel injection cycles in the engine) has been set-up specifically for the dual-mass flywheel. *Therefore it knows exactly how fast the dual-mass flywheel will spin under any amount of load. *The single-mass obviously has very different behaviour so there would need to be re-programming of the EMU to cope with this (and I
don't believe our colleagues in Weissach would ever release the EMU programming for the single-mass). *Fitting a single-mass flywheel without re-programming the EMU could cause major problems -
hence the invalidation of the warranty.

Vibrations/noise
The dual-mass flywheel produces a lot less vibrations/noise which is why it is fitted to the GT3. *The single mass would compromise the on-road dynamics of the car.

Positioning of the car
The GT3 is positioned as a road car that can be used on the track. *So we have to take into account some of the comfort elements (vibrations/noise) to make sure that we please as many customers as possible. *The GT3 RS is a racecar that can be used on the road
which is why we feature much more racing componentry such as the single-mass flywheel.

Hopefully the above makes sense. *It is always a very tricky subject as some GT3 customers always want to make their GT3 more 'extreme', however, this is really why we have the RS model.

I hope the above makes sense.

So that's a pretty comprehensive answer to a couple of avid track gents. Buy a RS rather than mess about with the " normal " GT3 set up.

It took a while. But we got there!!

thanks. RS for me.

[Nizer]

Originally Posted by _rocket

So, it's still a muffler, not a bypass? I wonder where the extra 14 horsepower is going to come from?

Anyway, I don't think the entire exhaust system will be made of Ti, it will be just the rear muffler (like the GT2).

Rear intake scoops on this photo clearly larger than standard GT3. Increased intake and exhaust flow combined with ECU tweak should make it pretty easy to extract 14hp.

[_rocket]

Originally Posted by Nizer

Rear intake scoops on this photo clearly larger than standard GT3. Increased intake and exhaust flow combined with ECU tweak should make it pretty easy to extract 14hp.

Ah yes I forgot about the RS intake scoops!

Originally Posted by Nizer

If I were Porsche I'd offer a simple upgrade package for standard GT3 that included single-mass flywheel, Ti Exhaust, and RS chip

and intake scoops. Not going to happen because would require RS decklid and tall wing as well ....

[_rocket]

Originally Posted by kryten

the vacuum system and pipes/connectors have been redesigned on the MkII...

Kryten, what about the seal itself? Has it been redesigned as well?

[kryten]

He said the seal works fine as long as the vacuum is present so there was no need to change the seal at all. They redesigned things to ensure the the vacuum is maintained...

[MarekN]

At Silverstone did anyone raise the question of the LSD?
A few weeks back there was controversy on this board because it was found that when you jack up one wheel, you can turn it by your hand, which looked fishy.
This happens on my car as well, but I took it out this weekend when the roads were wet and after experimenting and closely feeling for the action of the diff, it is clearly in rude health.

Nevertheless, has this subject been explored during the meeting?

[kryten]

Wouldn't swear to it but I have a vague recollection that it was mentioned as being unchanged...

[_rocket]

Hey Button,

The video you posted does not work - well at least on my computer, so I'm still wondering whether you asked Andreas my other question, which I posted weeks ago:

Third question - Ask him if Gen-2 connecting rods are still the same length as the last one. (Just curious to know why Gen-2 pistons despite being bigger are lighter.)

You see, if con rods are the still exactly the same, then it means the wrist pin offset remain unchanged, so I'm baffled how can larger pistons with same offset be lighter.