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CTS

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Everything posted by CTS

  1. CTS did get back to me with some better information. As hoped, there's a significant amount of claimed sophistication in the tune -- boost, timing, variable cams, throttle response time, plus. They said most of the gains are achieved via cam adjustments. They said the ttS will reach 550hp/575trq (30/45 improvement) -- not quite the same impact of the tt tune. They claim to have done 4 ttS's with customer satisfaction. I asked for dyno charts of the before and after, but they said their customer had them and they would track it down and forward it to me. (It's good to keep copies of stuff like that when selling). He also said they were having a 4wd dyno installed imminently. This should be very helpful for their efforts. He also said that fuel quality had a significant impact on performance with this car and the tune. Just closing the loop (no pun intended). Thx
  2. RE DMS: I have had some email correspondence with them (not all were answered) and a personal phone call with Phil -- I still know next to nothing about how their tune modifies what parameters. I am waiting for a call from "Robert" who supposedly knows at least some detail about what they are selling. I must say, so far, the only information I have received from DMS about their product, after considerable effort on my part, is "Software Upgrade makes car go fast, easy install, no problems -- $4000". I am hoping for a little more substance at some point in the near future -- especially for totally unprecidented cost (in my experience) of over $4000! I ceratinly hope to hear something more than a couple/few pounds of manifold pressure! There's my DMS experience so far, somewhat less than impressive. However, the jury is still out. Maybe this will help flush out some detail? It just bothers me when I have to work this hard as a "customer".
  3. 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.
  4. I have been fumbling around the list for a week or two now, and this seems to be a fairly challenging subject for the membership. This exhaust thing is usually not such a controversial subject on most vehicles -- especially with turbo cars. But for some reason, it is here. So what I read above is that the turbos do NOT benefit from the bypass, but the normally aspirated car does???? That's seems wack; and makes no sense to me -- but I am not speaking from a position of experience with this vehicle. I just can't imagine how the turbo would not benefit from less back pressure with this mod as all other turbo cars I have experience with have benefitted. So what I am interested in are facts. Has anyone dyno'd their turbo stock, and then put the bypass on and then immediately dyno'd it again? This would be useful information. Mudman2, you mentioned that you had a bypass on your S and that the "gain was most noticable, especially on spool up...". I am a little confused and can only assume since the S doesn't have a turbine to "spool", you are using "spool" synonymously with perhaps "hesitation"? Also, what does the dyno chart you posted represent? The delta is too significant to represent the bypass only -- which is what this thread was addressing -- I think? Peanuts, I'll take you up on your free offer (shipping only) and I will do a pre-mod dyno when my TurboS gets in and then dyno directly after install and post the results. I assume the TurboS and the Turbo should have similar results as to this mod -- different numbers maybe, but pro/con conclusion should be the same -- backpressure good or backpressure bad. Ultimately, I am just trying to gain a little ground with some easy mods. I would like to do it without flashing the ECU (or however they do it), as I don't like the possible warranty ramifications. So, does anyone have this kind of quantifiable evidence with a dyno other than FabSpeed -- bypass only? Can you post the dyno chart if so? Thanks P.S. I also posted a question about air intakes and filters on the TT, but was ghosted. Any commnets/advice on this would still be appreciated. Hopefully based on experience and not speculation. Hope no one is offended by any of this content or tone -- it is not my intent. I'm just tryng to get a handle on this topic through all the emotion and fractional comments.
  5. Yes, I understand the function of variable damping and the effect of it, but I was under the impression (from the dealer) that in etreme situations that the air suspension would actually work to make adjustments as well (fully active suspension). Simlar to a sway bar perhaps (tucking into wheelwell on inside wheels or raising outsides). This is what the dealer seemed to represented -- I may have also misunderstood. So, the air suspension does nothing except raise and lower the vehicle in a very slow way to achieve a level ride height at the predetermined height, and the PASM is varible shock damping only. This supports my observation. Thanks.
  6. Question for those in the know: I would appreciate someone explaining some of this system's functional intricacies, as I find my observation of its operation troubling. For example, when you adjust the ride height at a standstill or at slow speed, the movement is very slow and seemingly labored. This reaction time seems 'adequate' for moving from the highway to an off-road environment. But in PCNA literature, they say that "in high performance road scenarios, the system automatically suppresses the pitch and roll"...etc., etc.). How is it that a system, which takes a half hour to move 4", is going to compensate for plunging into a massive understeer situation with significant suspension loading in a fraction of a second? Given my lack of knowledge, I could only hope the system, while stationary or at slow speeds, "saves itself" operationally for times of real need??? (Is this turn "Pressureworthy"? -- Sienfeld Reference) Thanks!
  7. Does anyone have an idea about how many cars have this problem? A few, or many?
  8. Greetings members; I am new to the list and to Cayenne. Have a TurboS coming in June. I suspect this topic may generate a yawn or perhaps some reiterative frustrations; but I have read several historical posts but didn't quite find the info I was looking for on this subject. 2nd Cat Bypass: FabSpeed seems to be the dominant player. While I saw that one guy had some "service issues", it seemed to be an anomaly. There was some mention of other manufacturers, but couldn't find any specifics. Who are all the players for this product? What is the list consensus on quality among the options? Air Intake: While most all of my forced induction vehicles have had completely new intakes and filters, some late model vehicles don't seem to benefit from replacement intakes, but do benefit from better flowing stock filter replacements in the stock air box. Is this the case with Cayenne Turbos? What's the scoop? Also, are there any noise/sound issues associated with intake mods. For example: I had a Q45 a long time ago where the aftermarket intake was 2x louder than the aftermarket exhaust -- it was almost a problem. Is this the situation with the CT? The name of the game: Easier air in and easier air out. Thanks in advance!
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