cannga:

 


Thanks for sharing. So the video shows a RS Tuning GT2 being passed by a Turbo? Any explanation? Has the GT2 been data-logged? I am having more doubt on these pre-packaged tunes (as opposed to one that is "custom"), even one from as competent a tuner as RS Tuning.

It appears there have been some data logging of tuned cars from tuners that IMO are competent, and some of the data are all over the place with respect to timing and AFR, for example. Could this GT2 be another example of how a pre-packaged tune may work on some cars and not others? Simply due to car to car variation?

I am well aware that any car leaves the factory with what is essentially a pre-packaged tune; which makes the issue all the more interesting.

 

 

Hey Can, just saw these replies.....

What you write above is very true. The GT2 in the video above had the Cargraphic 635 kit fitted with a set of CTR intercoolers (like mine). The original plan was for the owner to get the work done at RS Tuning's facility so that they could check everything was OK and even do some optimisation of the program.

The kit was actually installed by a shop in Sweden and I believe there were problems in the installation - I don't know the details (and in truth its non of my business) but it is entirely possible that the GT2 is not running the full 635 power....

Alternatively the 997tt in the video may be tuned to run its VTGs at a much more aggressive loading than for example RS Tuning would set them at, this would indeed give faster acceleration, right up until the Xth time when the VTGs melted and trashed the motor - the ones you never hear about Smiley Actually you do, one of my pals who works at an OPC told me about a warranty claim where a "tuned" 997tt.1 melted its VTGs and wrote off teh engine, Porsche will pay ziltch and the owner is not so happy !

Re Techart - IMO FWIW Smiley the quality of their stuff (in particular body kits stuff) is factory but the engine tuning is not the best.... That 620 kit on the 997tt.2 is very very very fast tho' isn't it - as Marcus says, how many times can it run that 0-300 in 25s back to back ?

Regarding the Dfi turbo engine, RS is very dismissive of this engine, he says it is just the 3.8 carrera engine with turbos and he reckons it will be replaced soon, probably with a V8 !

 


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2009 997 GT2 659PS/827NM DIN