MileHigh911

Hey everyone. I know there is a wide variety of guys here that track this car. Mine will be delivered late October, so I would like to have a post that gives good info for those about to receive their 2015. I do realize, some take it to the extreme, while others leave it more street focused, and many keep it in the middle somewhere. I'd like to start collecting opinions from all about what changes they recommend, depending on the level of track-worthiness, say, as LEVEL 1 changes (street mostly, DD comfort, but autoX and <4 track DE), LEVEL 2 changes (near half/half, accepting some street inconvenience for better track-worthiness), and finally, LEVEL 3 changes (what warranty?, how fast can I go?). Let's hear it guys....and where applicable, why you like the changes you did (rather than just the old GT3 ideas from models past).

mooty

mods are mostly the same, old model new model. no need to reinvent things.
wheel and tires with pad upgrade
roll bar with right seats and harness
all can be reverted easily

toe links may not work now due to the servo on RWS someone can test it out. my car not here yet.

MileHigh911

I'll get it started:
LEVEL 1: Adjust sway bars to softest fr/ firm most rear, alter suspension within OEM limits, getting front to near -2, with rear at -1.5, keep MPSC2 or even change to MPSS if rain or weather concerns, adjust tire pressures accordingly when at the track, brake pads

LEVEL 2: All the above, plus: Maybe change seat to race bucket, add shims to allow for more (-) camber, consider a more track orientated tire like the Trofeo, consider a roll cage, alter the exhaust with SW bypass, possibly 200 cell cats

LEVEL 3: All the above, plus: Change wheels to 19 " with hoosiers (or similar R rubber), Likely tow car to track, race seat and roll cage mandatory once adding race rubber, consider changing suspension components to allow for even more adjustability

MileHigh911

Mooty....that is exactly why I wanted a post like this. There are still differences, even if small, like with the RWS. Somewhere I read....maybe SAMfrom TX....that they had a weird steering quirk that changed the chassis dynamics abruptly. Not sure if he found out why. What pads have people tried..., etc, etc, etc

mooty

^ copy. i am sure sam will chime in soon

SamFromTX

Not me. I think it was someone referring to an autocross event.

MileHigh911

Sorry about that.....I know I read it somewhere.
SAM,
Since you are putting lots of track time on yours......likely jumping from my LEVEL 2 to LEVEL 3 track machine.....what would you recommend for the soon to be owners in each of these theoretical categories???? Any regrets to what you have done with yours???

Manifold

Personally, I'd be reluctant to mess with the suspension, given all the engineering Porsche put into it; easy to make things worse, probably not so easy to make them better, considering the PASM, RWS, etc. I wouldn't even change the sway bars (which I assume are adjustable?). And is alignment adjustability really not enough with the stock suspension?

<3mph

Anyone considering a light weight battery? Probably level 3 to be worthwhile. Thought this once was a factory option--does someone know if it was specced much?

orthojoe

Iirc, the factory lithium battery wasn't offered because the RWS needs extra juice that the lithium can't provide

SamFromTX

No apologies needed, I was just clarifying it wasn't me. I don't autocross and have not noticed anything weird on track that I can attribute to RWS. For me, the sway bar adjustment (they are adjustable) is a must. It has to be changed from one track to another. Softest front and firmest rear minimizes understeer in tight tracks and allows the car to rotate freely. in tracks with fast corners, like TWS, it is not safe to have the front loose or the car will be biased towards high speed oversteer, so I tightened mine a notch. I also find more negative camber to work best for my style of driving but if you drive a lot on road, may need a compromise.
The car's brakes are less power assisted than the regular 991 Carreras, perhaps to allow for more modulation but this makes for a softer brake feel on track (and road). Changing to a pad with more bite helps a lot. AFAIK, the only after market known track pads that fit are the Pagid RS 29s, which I have. My car just had the roll cage and GT2 seats installed (they dropped it off today) and supposedly everything is working fine. I bought my first Hans device and need to practice getting all this on properly.
I would love to put Hoosiers and save lap times but the expense and hassle made me reconsider. I have been told by many reliable sources that Hoosiers are a one weekend set, if one drives hard and at $1600 a set, this adds up quick. I may try Trofeo R once and see how much benefit and wear difference I get.
I have headers with low flow cats and SW bypass.
Sorry, not very organized but you get the picture.
I have no regrets. I recommend increasing camber and adjusting the sway bars. Stock tires are superb. if you can get safety, do it. That's a good start.

<3mph

Thanks, good to know.

GTEE3

change out stock Brake Fluid to a hi-quality fluid like SRF Castrol.
some driving aid...AIM, etc.

zedcat

Hi Sam, did you get a bolt in roll bar/half cage installed? Can you tell us which one? Also any issues with the GT2 seat install? I recall reading the sliders/mounts bolt up fine but electrical connectors weren't compatible or something. Did you have to clear airbag lights? I really like the GT2 seats.

Thanks!

Manifold

I guess no one figured out a way to import the Porsche clubsport roll bar into the US? Still kills me that clubsport package isn't available here.