Jean

Gunther used to be TTP, Gemballa and a few more, working as a freelancer. He is the R&D director now in Sportec, and still doing some freelance work. Excellent programmer but difficult to get hold of.

RS Tuning, is Reinhold Schmirler, ex-tech head at RUF and the brain behind the Yellowbird project, he left RUF in disagreement (some say because of the Yellowbird) and started RS Tuning. He has probably the most extensive racing palmares in Porsche racing, many race cars have his signature on them although not advertised, builder of the Alzen monster and the EDO car that beat the 'Ring record sometime back. He is "The" guru, in Europe and thinks that you cannot have over (true) 650FWHP on a 996TT put reliably on the road, and that is, using $30k+ intercoolers and staying within 1.1 Bars of boost maximum.

GT

Gunther but also Ueli.
I am very happy with their programming work after having reprogrammed my car 3 times there at various stages...
Latest example was when I tried to upgrade from stock to an aftermarket exhaust ; well known manufacturer, 100cell cats etc.. I tried it on the car, immediately felt an drop in response, torque and power below 5,500 not to mention the noise from 1,500-2,500rpm.
Sportec suggested to return that exhaust and switch to their customed stock one with racing cats. While I was very sceptical about that for obvious reasons, I agreed on a trial basis. The situation improved but still the response was poor and the turbo lag very noticeably increased. I decided to take the car there to reprogram the ECU on the dyno and I could not believe the difference the new software made.. Turbos started to kick in at 2,500rpm, peak torque was up to 850nm while the noise was almost same as stock. They seem to have a lot of experience with 996 turbos having tried so many different components.
Pictures and dyno coming up soon..

Kevin

GT, welcome.. Please post more information.. I know that your car received new gearing, (6th)correct..

Craig.

Gunther personally programmed my car (in my car) a few years ago for a k16/k24 hybrid turbo I was using at the time. Her did a great job and it ran smoothly for the entire period that I used his program. I had to dump his program when I switched turbos.

Craig

Miles965uk

They have a very good ECU programmer [/QUOTE]

What makes them such a good programmer? I mean is it to do with the base maps being optimised better or the off base stuff?- or even some tricky used somewhere else.... I just dont get what more you can do to programming the base map any better than tuning for MBT for the spark and running the normal a/f ratios? Excuse my iggorance !

Kevin

Miles there is a huge gap between the code and maps for a Motronic based ECU vs a standalone system.. You also have to realize that the Motronic systems are adaptive. The top European tuners have the base code to these ECU and emulate vs view and re-write like many other tuners.

GT

Note, there were 4-5 small oil leaks that had been around for a while and thus the block looks messy. Car was driving fine but there was this repetitive noise on idle (loose intermediate shaft bearings).

Miles965uk

Thanks Kevin

GT

notice the cam alignment was off by about 3 degrees or so..

GT

last ones:

GT

Note that this is after I changed the exhaust and the difference of the 2 measurements on that chart is before and after further optimisation of software (after new exhasut with 100mm cell cats)

Kevin

GT, Thanks for taking the time to share.. The dyno sheet was done on the engine dyno, correct??

GT

It was measured on the 4wd dyno they have, so it is estimated power on the flywheel but the measurement is on rear wheels. Measurement was at 400m altitude - it makes a difference since the turbos have to run higher boost to compensate, quite noticeable when I drove back to sea level- and unfortunately fuel that was in the car for over 2 weeks.. (transportation etc).

Zippy

Thanks Jean. RS Tuning sounds like a very serious group. Do they have a presence in North America?

Kevin

Here is a recent dyno sheet that Uli sent to me.. I had a very small contribution