TRAKCAR

Maybe this time with RWS the diff won't matter much.
But if like 997, you will have to replace /upgrade soon for improved handeling.

Anyone have the max e-diff numbers?

GrantG

Pretty sure it's mechanically 0-100% (not sure how they've programmed it)

TRAKCAR

The 997RS I had with motor sports internal LSD was much easier to trail brake then the 991 but maybe with RWS we just don't need that much trail brake?

GrantG

I think the Torque Vectoring (Active braking of inside rear tire with PTV+) plays a big role there too...

http://www.porsche.com/usa/models/91...-ptv-ptv-plus/

TRAKCAR

I didn't even know we had that, how's that work?
Wouldn't a PTV+ system need an open diff more or less?

GrantG

Yeah, so the e-diff reduces the locking in order to brake the inside rear wheel on corner entry (without reducing the locking of the LSD, the braking would also be transferred to the outside rear wheel).

There's some info here:
http://www.porsche.com/usa/models/91...-ptv-ptv-plus/

Mvez

RWS def part of the equation. I'd guess the E-diff doesn't lock as much under decel as your Cup lsd, but I would assume with RWS and 265 tires the RS already turns in like a boss?

Guess we will all be finding out what these 6MT cars like for setup soon.

ipse dixit

The mechanical diff is basically Porsche cheaping out on parts again.

TRAKCAR

Yes, turn in is very solid.
The rear is loose only in low, 2nd gear corners and the front understeers in fast corners on the way out on hard throttle.

isv

Disagree. Porsche are very good at cost saving but not necessarily this time I think.

The e-diff changes the feel of a car significantly imo. I'm glad they kept the mechanical diff on manual cars like the R and manual .2gt3. If one wants the (highly digitised) e-diff as a go faster aid, you might as well go the while hog for a dual clutch car and embrace the whole electronic thing fully.

996FLT6

They coulda went real cheap and have no diff. On the street you don't need a lsd. When mine fried car is effing unstable on track heading back home it was a saint. Question is how robust the lsd internally for the 991.2 manual. Both 996/997 gt3 stock internal material was crap!!! Mike

mooty

both

996FLT6

The only nannies on the 6gt3 was the abs and mechanical lsd. Then came the 7gt3- it came with more nannies from a stability standpoint ie pasm. Very invasive/intrusive on track. Nice to have as a safety feature but intrusive none the less for track. Much more compliant ride for the street though. The 6gt3 wasn't all that great on the street but oh so great for the track. Some have been able to disable the pasm for the track but it wasn't easy. Ediff vs mechanical lsd- don't know much about edit but I do know once you put the nifty guard internals or the whole banana with guard casing- pure nirvana and durability. If Guard has an upgrade for lsd if 991.2 gt3 lsd is just as bad as 6/7 gt3's- it be the 1st mod I do for track. Mike

Spyerx

997.1 only had very basic tc
997.2 had full pasm
The system on the 997.1 is not very intrusive but it does slow you down and won't save you

Mika911

Sorry, did you say something...? Got a bit distracted by your avatar..