According to Porsche, the X50 package does not increase 0-60 times on the 6-speed, just the tip. I don't think that sounds right...





I know they are conservative on their numbers, but if they are trying to sell a performance package (at $17k!!!) wouldn't they want to show how it is superior to the standard TT?

I think its 0.1-0.2 secs better on 0-60...Real difference is 0-100 or top end

I would think so - I'm just curious why Porsche would post numbers like that?? One would hope it is not true.

I spoke to Lanny at Upsolute, by the way, and he said that while they do an enhancement for X50, it gets the same results as the standard TT, ending with 495hp or so. I guess because X50 already starts the tuning process, Upsolute merely finishes what Porsche started. GIAC might be the better way to go, I guess.

Msindi - I sent you a PM, but didn't hear back from you - still wanting to find out about pricing on the GIAC...

I have an X50 with the GIAC ECU - if you want to see what it feels like, drop a PM.

Check ya PM now - went to bed when I got it (I am on Cali time +11 here) and been busy organizing the Techart group buy...

Sorry, nothing in my PM at the moment - no new messages...you can email me if you want - I sent you my email address in the PM last night

I would not expect that much of a difference once the turbos are up and spooling with the X50. I am assuming a decent 996tt 0-60 time is accomplished by dropping the clutch at an rpm where the turbos are already spooling? That would account for the similiar numbers. Real world conditions, the X50 definately has more low end grunt then the regular 996tt. I have riden/driven both and personally found the X50 to spool up sooner and to have much more torque in the lower powerband.

check here for comparison of power and torque curves http://www2.uk.porsche.com/english/g...nt/default.htm
The X50 benefits more in the top end than low end....Its like drag racing, even if you increase horsepower a lot you can only improve your 1/4 mile time (and trap speed) by so much given the weight of the vehicle

The smaller turbos respond faster in first gear when the RPM's are rapidly rising. They also should get the boost back up quicker after the 1-2 shift. Past 3500 in second gear the X50 will pull stronger. The factory dyno curves are made with the engine held at a constant RPM. When the engine RPM's are rapidly rising the engine produces less torque.

My thoughts

I don't believe those 4.2 0-60 are being done with any degree of consistency by average Porsche owners. The 996 turbo isn't all that easy to launch, and it takes some guts to do a 5000 rpm start to give you a better chance of not bogging. If you roll into the start, start with lower rpm, or bog the launch you're going to see numbers upward near the 5 second range for either the normal 996 turbo or the X50.

Here's a link to a Gs pulled graph and 0-60 time of a stock X50 run with a good launch. The 0-60 time was a bit over 4.3 seconds. Somebody might do a hint better than this run with a stock X50, but I'd suspect there's not much room for improvement. The RPM at launch was a bit over 5000 and never dipped below 3500. There was no bog and the 1st to 2nd gear shift was quick.

Gs graph and 0-60 time

Greg - you may be right, but it sure feels like you are moving well faster than 4.2 seconds when you drive the thing!

Also, I wonder if any cars out there get consistent times to what the auto mags publish or the car manufacturers themselves publish - doubt any of the drivers can match those on a regular basis, so it's all relative.

Naturally aspirated auto trans cars with big torquey engines are much easier to accelerate consistently. Bracket racers can run consistent 1/4 mile imes within 1/20 second. I'll bet a turbo tiptronic with sticky tires would run fairly consistent times also. Hmm, anyone do a 4 wheel burnout in a 996? That could drop the 0-30 time .2 - .3 sec.
Also realize the many 1/4 mile drag strips use spray sticky stuff on the starting line before big events. This can lower the 0-30 or 60 foot time considerably. Take this into consideration when guys are posting their best ET's. It's good for a track's reputation when national records are broken.

The tip TT I test drove felt nothing near the speed of the 6-speed, so either my perception is off, or the manual tranny just gives you a certain feel you don't get in the smoother tip shifting.

Buying a used X50 is one thing but buying new and adding the X50 as an option for $18k is another and just not worth it.

LOL - I need me a set of those bad boys Jevin - need a hookup though