So, how are those new DFI engines are running?
Besides few fuel pump, Pdk problems, and notchy transmisions i have not heared any thing alarming........any news?
How are they holding up on tracks?

 

1 - HPFP affected a few early production cars.
2 - There are no PDK problems.
3 - There are no notchy transmissions - all Porsche trannies are notchy - the claim is a new owner misplaced expectation, or operator error.

 

My car does not have any fuel pump/pdk problems at all. Almost at 35,000KM of spirited driving plus some track time.

 

Early car here...September 2008 delivery:

ZERO fuel pump issues
ZERO PDK issues.

Cracked header weld early on...fix under warranty 1 day.

Car is 50/50 DE street use.

 

Zero problems here too. It´s a July 09 PDK S. PDK works perfectly with no hesitation at all. Installed a few weeks ago the paddle shift steering and it gave me a all new pleasure to drive the beast. Very happy with it till now.

J.Seven

 

no problems here either after 1 year!

 

By the way any update on soot buildup and oil consomption of your car?
Your car must be broken in by now, any changes?

 

Also any update on the soot is appreciated.
http://forums.rennlist.com/rennforum...m-997-2-a.html

http://forums.rennlist.com/rennforum...aust-soot.html

 

No real changes.....I stopped watching every mile for oil usage but it has gotten a bit better.

At the track which is around 140-150 miles of track miles each day I can use as much as 3/4 quart, however my last event a few weeks ago I used only 1/2 quart. For the street I usually will need to dump around a quart in every 1400-1700 miles now. By the way, my 09 Cayenne S is the same way. So this tells me it is NOT just an issue with the flat 6 engine. Porsche must be doing something for gas mileage with the piston rings to reduce friction....I firmly believe this.

I still get lots of soot around town and at lower rpm cruising levels, The soot is a powdry/oily like black substance if you rub it between your fingers. Only time my exhaust tips are not like this is when I track the car. At the track I see not much soot and the inside of the tips turn clean to a whitish grayish color.

 

Regarding the oil consumption issue.
A while ago i switched to castrol edge sport 10w-60 instead of mobil 1 0w-40 and the oil consumption stopped on the spot. I mean ZERO oil consumption in 15,000 Km ( including 2 track days at the yas marina circuit in somewhat hot weather).
Recently switched back to mobil 1 and the oil consumption is back to what it used to be.

 

Thank you guys for all the responses,
In the case of heavier oil that you are using, it shows that the ring design have something to do with it.
Do you also get soot build up?
Many Thanks.

 

Well to be honest im no pro but maybe you're right.
As for the soot, yes it is still there but not as bad as it was when the car was new. The soot isn't oil related since my car was still sooty even when i used the castrol.

 

I just want to ask this from a technical point of view:

As for the soot from the tailpipes, I mentioned it to a mechanic. He wondered (just wondered) how does it affect the longterm lifespan of the catalytic converters in the car...?

If there is already much soot from the tailpipes, there should be some soot also got trapped on the honeycomb structure inside of the catalytic converters, which seat between the engine and the tailpipes... Would it shorten the lifespan of the (expensive) catalytic converters unexpectedly?

Thanks for any technical inputs.

(Current owners shouldn't worry about it... It shouldn't have any effect during the new car warranty period, more like down the road when the cars are older.)

Regards,

 

My other car is a diesel truck.. so I'm not too concerned about soot coming from my P-car..

 

I here ya. I have a F350 and a John Deere Tractor, both diesel. Not much a p-car can put out the exhaust pipes that comes close.