Tom, I guess you guys haven't opened up a motor on a 997.2 Turbo or Turbo S but does the information posted by sundevil make sense given what you guys have seen in the ECU? Thanks.

 

What is it you don't believe? Here's an extract from the product info guide for the 997.2 Turbo and 997.2 Turbo S:

In the 911 Turbo S models, a modified valve control system and an adaptation of the engine management, combined with an increase in maximum boost pres- sure by around 0.2 bar, enable the power unit to produce 390 kW (530 hp) between 6,250 rpm and 6,750 rpm and generate a permanently high torque of
700 Nm between 2,100 rpm and 4,250 rpm to deliver even more power to the road.

By the way, compression ratios on S and non-S are the same - 9.8:1

If you'll send me your email address I'll send you a copy of the guide that compares the two so you can get all your questions answered.

Also, I thought the displacement of the 997 turbos was:

997.1 Turbo 2007/2008/2009 - 3.6l (Mezger engine)
997.2 Turbo 2010/2011/2012 - 3.8l (DFI engine)

997.2 Turbo S 2011/2012 - 3.8l (DFI engine)

 

Come on guys this isn't rocket science, 30 hp is not ground breaking. You could get double that from an EVOMS tune. What Porsche did was save all the good stuff for the 991TT and 991TTS.

 

Sounds like the 2011 produced the same power, but was built with higher capabilities than the 2010, hence the changed bore and stroke for the same displacement. Porsche then increased the boost on the S, but it doesn't necessarily mean that you can increase the boost on a 2010 to get the same 530 hp you get out of a 2011 engine with the same boost. Interesting thread. It's a good question that tries to answer "Is it really worth getting a Turbo S?"

 

as i said just program..... pistons, conrods all the same, camshafts, things keeping cams in the position etc...

i wonder is there any sense to buy S...?

 

Are you serious?

Most people don't modify their cars. The S is faster and also comes standard with things like mono lug wheels, carbon ceramic brakes, PDK, dynamic engine mounts, etc. You can get most of that as options on the 911 Turbo but sometimes it will cost you more than if you just bought the S.

If your goal is power only and you don't care about the extra features you get the the S, then don't buy it.

 

You started off by asking if there were any differences. People responded, you chose to argue and now your question is "is there any sense to buy S". Sounds like you knew the answer to your first question before you started trolling for responses. I offered to send you a brochure with all the differences. It's too big to PM - where do you want me to send it?

 

if someone is asking and I'm not sure or I don't know I'm saying it...you was sure about the details you provided, probably you have it from U.S catalog but its not sport auto so I wont trust that easy.....I believe Porsche marketing will write many things to sell cars in U.S

Is said i jest list of parts....and there is no difference.

I was absolutely sure that if ask here about it I will receive 10 valid difference points or so, before I was here often this kind of people was writing here

 

but still thank you

 

There is no difference as you put and I think we are going after the wrong guy here. Sundevil was the one that said the compression was different.

GT3/tt was saying that is not true. He was right.
here is my ??? If Porsche can up the boost, different exhaust, how could they enforce a no mod warranty on the engine if they did the same thing to the SAME engine. Seems that if someone blows their engine Porsche could lose that battle if the person was able to say that porsche did the same. Just a thought

 

I think you are going after the wrong guy. I think his point was why buy an S if all they really did was increase the boost. Frankly I agree, why buy an S? The LAST thing I want is Ceramic brakes, if I wanted to track, i would get a GT3. There is a reason the GT3 is NA... HEATSOAK. So the TT while might be good for here and there track days I dont think its a FT track car, and if you do one might like the GT3 better.

As to the Seats. I was just at Porsche of tysons corner and they have an S with normal seats. I also think those are overrated. They add bolsters, they arent good enough for the track and are annoying on a DD.

 

Squat thank you for that

 

Because they did more then that. In 2011 when the Turbo S was introduced, BOTH the Turbo and Turbo-S got a revised 3.8L engine, with different bore/stroke then the 2010 Turbo. That means different crankshaft and different connecting rods. In effect...the reason for that was to "reinforce" the engine for the added power of the Turbo-S.

 

I guess I will then keep it to the 2011 cars. If both are the same, the thing that they did for the S was boost. So one should be able to up the boost on the 2011 turbo without issue.

 

I don't think there's any reason to stay away from the 2010 cars. We've done a few of our full turbo packages on them and they end up making the same power as the 2011+ cars.

Remember, manufacturers are EXTRA conservative. If you asked Porsche whether or not the 997.1 engine can handle more power, they'd probably say "oh no...it must be strengthened to make any more power"...but we all know that's not true.