beemaze

Thanks for the solid replys. Interesting.

When I first looked at the TT and the TTS (on paper), I noted that I could get a great deal on a slightly used TT and modify it to a 'virtual TTS' and end up with HP/TRQ like the TTS, only cheaper. However, it wasn't a LOT cheaper (looking at brakes and intercoolers as well)(i.e. RUFs package); plus other suspension changes would not be present. Since I am looking to have it for a while, I also wanted specific color, sport pkg, wheels, etc -- so I elected to order.

It's interesting how nebulous the 'exact' differences between the TT and the TTS are noted in public material. As best I as I can tell at this point, the differences are as follows:

Intercoolers

Brakes

Front suspension components (minor) and "tuning"

Different ECU maps

Different suspension software

'Possibly' different turbo "internals" (??? -- no consensus)(I don't know if these means same housings, but different compressor and/or turbine wheels)

Does anyone disagree with this or know of other differences?

In any case, I thought that even though I came out of the gate with a larger $ number, I believed I had a solid foundation to work with over the TT alone. Since the turbos are mostly purported to the the same in both (except for possible internals?), DMS (and others) step 1A is to simply raise boost. However, I suspect that is what Porsche has done on the TTS already and since that is the primary benefit of what DMS (and others) do aftermarket, their upside may be capped on the TTS. -- but with Porsche, more focus on emissions perhaps. Soooo, I am speculating that the TTS may not benefit as much from an aftermarket tune the way a TT does.

Are there any TTS' on the list or does anyone know of a tuned TTS out there?

Peanuts, who is your contact at DMS? I emailed a guy overseas, but I thought I remember you saying you had a domestic contact?

Any comments anyone has about TT vs. TTS and ultimately, possible modifications and benefits for a TTS are greatly appreciated? Thanks again.

With regards to the differences between the TT and TTS, we (Marc at AMS and myself a customer) studied this issue extensively by comparing parts numbers and from official Porsche parts guides, and pretty much so came to the same conclusion. We are not too sure if the primary catalytic converters are different however. The turbos themselves are the same.

That being said, less restrictve primary cats and bigger turbochargers would be your best bet for significant hp/torque gains. Or just trade up to an '08 turbo with that sweet DFI!!

A question for Cayenne TT owners, any of you tried or are running Giac or Revo software? What are your thoughts on its performance difference? And any other software that you would consider for the Cayenne Turbo? I am mainly interested on either Giac or Revo because they are readily available in Australia and are lot cheaper than DMS or Gemballa, at least in Australia they are.

Thanks in advance.

I'm sure they are all quite similar in terms of performance increase. In my experience, I used Sportec at first who came to the MAHA dyno, then had a custom program made by AMS after the results were not what we wanted. I based my decision on the results from the MAHA dyno. In my case, there were some other factors such as cracked coil packs that may have negatively altered Sportec's results on the dyno.

GIAC is very popular in my region for the same reasons you state - price. But I didn't have the time to go back and forth between a GIAC dealer and then the dyno shop, etc. Sportec is a great company that backs their product.

If you reseller in Australia can unconditionally guarantee the claimed hp/torque increases on the dyno, then you should go with the company that'll back up their product !

Ive been having a recurring problem on my cayenne turbo, when i press the brakes and stop the RPM drops as soon as i stop and then goes back up, also when on low revs on the 5th and 6th gear the engine shudders and only gets back to normal when i give it more gas. any hints on whats exactly causing this to happen?

Have your dealer replace the ignition coils and plugs. The 1st generation versions are known to crack early on. Mine cracked at about 11,000 miles. We discovered on the Dyno that my 04 turbo was not making the hp it was supposed to be making. After the coils and plugs were replaced, I got all my horsepower back!

I'm looking at putting a DVD player with LCD's in the headrests

Has anyone done this before?

What systems do you recommend?

<{POST_SNAPBACK}>

Check out Vizualogic.com

I purchased the headrests with built in monitors for my wife's MB ML430. They fit quite well and are of high quality. I haven't yet tried the install on the Cayenne--I'm a bit wary.... :(

I kind of agree with you on McKenna.

They're OK. They have one Porsche loaner, a Cayenne S, and the last time I was there, somebody else was using it. A relative of mine got to use it for a few days. I did get a free Enterprise rental for a few days, however, which is better than nothing, but still a waste of time when you're in a hurry.

Find me a Porsche dealer/service that kisses my a$$ ....

Warning! :o David's work is commendable, but....

The installation above is NOT completely correct. The valve stem part of the spare tire must be aligned at the 6 'o' clock position. The fastener fits directly on top of the valve stem protecting it. Please see the enclosed picture for the final installation.