thanks

 

I believe the 40th Anniv. 996 came with an LSD. However, none of the other 996's came with an LSD standard.

 

mine doesnt have it

 

why the hell would porsche not put lsd on their rwd cars..

doesnt seem like you would have any fun around the corners...

 

Mine has it, it was an option.

 

PSM would be their answer.

 

In the US, ONLY the 99 C2 and the 40th had the option of LSD. No other years came from the factory with it.

 

Interesting.

So how does PSM make up for not having an LSD? Even my G35 coupe from 04 and my S2000 have LSD's in them....???????

 

I my opinion excluding an LSD is a HUGE oversight for Porsche.

It was only available as an option on the '99. It was standard on the 40th anniversary.

Standard on GT2, GT3 and Turbo.

The LSD Porsche uses is the clutch pack type.

They claim that the large amount of weight over the rear limits slip issues and that with PSM it is not needed.

PSM is a pseudo LSD. Essential when the computer senses slip it applies brake to the slipping wheel essentially sending the power to the other wheel (open differential).
Nice in theory. In practice it is clumsy and annoying. The last thing you want as you power through a turn is the computer to abruptly put on the brakes.

In my opinion in an $80K+ car it is inexcusable to not include a $1200 LSD (or even make it an option). The fricken Miata has one!

My S2000s had them and it makes a huge difference in getting the power down on the street and on the track. AND it is much more fun. Great to slide around the corner with it, not to mention the 2 scratch burn outs. The peg leg that my 996 has is embarrassing.

When I bought my 996 I did not know that they didn't have a LSD, I assumed a bonified sports car would have one. I was sorely disappointed. To this day it is my biggest disappointment with the 996.

One can be added, but it is not cheap. Many shops will not even open up the 996 transmission. It was only 6 months ago that Porsche even started selling internal parts for the tranny, before that it was replacement only. So essentially no one knew what they looked like inside unless they were a serious race shop that didn't care about warranty and just opened it up and made their own parts. (or go sequential shift)

Your options are:
1- Source a tranny from a 99 or '04 40th anni car (not so easy to find, many have blown out clutch packs that need rebuilding anyway.)
2- Quaife torque sensing LSD (~$1,395 but the installation is the killer. ~$5K total)
3- Guard transmission LSD clutch pack type, more expensive but more complex and allows custom slip settings for accel and decel. $$$

I've spent a little time investigating this.

 

2- Quaife torque sensing LSD (~$1,395 but the installation is the killer. ~$5K total)

Really? 50 hours to install?

 

$1,395 differential
$100 transmission fluid
~20 hours at $125/hr
= $3,995

$5,000 was a ball park figure I was quoted, perhaps it was a little high.

 

996 was/is a better handling car than most, LSD or not. Id rather have it but im not complaining. Well not that much anyway lol

 

20 hrs for Diff install? wow!

 

Yeah they charge something like $700 to take the trim panel off the door to fix the window, go figure..

 

you are right about the Porsche Tranny...had to replace mine a few months back...crazy.

no rebuilding..only replace or buy a used one and take a chance. I had to have a porsche reman tranny flown in from germany because there were non in the US. Ugh...what an ordeal.