| Author |
Message |
Kds (Kds)
Junior Member
Username: Kds
Post Number: 219
Registered: 5-2003
| | Posted on Saturday, September 27, 2003 - 12:52 pm: | |
That's interesting.....if it's on the boost faster and something you can really feel, then to me anyways, it's tangible. Also, saving 30-50 pounds or whatever, of dead weight for a couple of thousand bucks is worth it just in the reduction alone I'd say. Looks like a new exhaust is in order.
I found the GT2 when I drove it to be a little on the quiet side, so more noise might be doable if that's a side effect of a new system.
I'll spend the weekend researching more and let's see what transpires.
Cheers......... |
wm hart (Whart)
Intermediate Member
Username: Whart
Post Number: 1654
Registered: 12-2001
| | Posted on Saturday, September 27, 2003 - 8:22 am: | |
Well, Kds, i can tell you based on my own personal experience with the GT-2 exhaust: the stock one is HEAVY! I am not interested in noise for its own sake (in fact i would prefer the Fabspeed Quiet to live up to its name in that respect), but the car goes into boost much more quickly with the change in exhaust and cats. If you look at the performance curves from Stephen's exhaust shootout, you can see what's going on; granted, his turbo is tweaked far more than my GT-2, but i have experienced a noticeable performance gain from changing the exhaust.(The results were posted on both sites in the form of a powerpoint slide presentation). I suspect there is room for engine improvement, too, only because the 2004 GT-2 gets a higher output rating, based, i've been told, purely on chip remapping. Let me know... |
Kds (Kds)
Junior Member
Username: Kds
Post Number: 215
Registered: 5-2003
| | Posted on Saturday, September 27, 2003 - 7:16 am: | |
Bill....
Thanks for the leads. I did find lots of stuff related to normal 996TT's there, but not a lot specific to the GT2. While I recognize the similiarities in the engines used in both, my past experience with Porsche leads me to believe that they are like Ferrari with their "higher" performance powerplants, that is, there is little remaining for the aftermarket to do as the engine is already near it's reasonable design limits relative to my customer's wallet.
Your exhaust comments surprised me, merely because it "has been" accepted that it is almost impossible to improve upon a stock Porsche exhaust system on any basis that represents a good monetary value. In all the years I have been selling these, and owned them, that was the mantra (based on dyno tests), maybe things are different.....have to check it out obviously.
I'll look this guy in Kansas up and see what transpires. My client is not into going beyond engine mods actually. The last Porsche I sold him was a 993 TT that we did an "Autothority Stage 2" conversion on for about $10K USD. It was an easy 100HP and made an incredible difference to the vehicle dynamics...to say the least. Don't know it that can be accomplished with the GT2 though.
Thanks again.............I'll stay in touch. |
wm hart (Whart)
Intermediate Member
Username: Whart
Post Number: 1653
Registered: 12-2001
| | Posted on Saturday, September 27, 2003 - 6:20 am: | |
Hey, Kds, just noticed this post. I have been frequenting Rennlist and 6speedonline, a new forum. Both share most of the same users. There are several people on both sites who have gone the distance on upgrades; from what i gather, the following seem to be accepted without ••••••• up the car. Garrett (GIAC) makes a chip that is used as the basis for a handful of modifications by certain authorized dealers. After it is programmed, it can be manipulated via a remote control with a variety of settings, including one for racing fuel,stock, etc. This chip and installation are a bit more pricey. There are several US tuners authorized to install it, and each has variations on what it does; Stephen, aka Porsche PHD, from Imagine Auto in Kansas, is authorized to do these, and he is a straight shooter.(i believe he is also a sponsor of one or both boards, so he's easy to track down. He did a comprehensive aftermarket exhaust test a couple months ago, which is how i hooked up with him).
Change the exhaust and cats; apparently, backpressure is anathema to turbo' engines and there is a huge difference in performance to be gained by going with a high performance exhaust and racing cats. If there is chip work being done, that should be done in conjunction with the exhaust, and vice-versa. Two favorites appear to be Europipe and Fabspeed.
There have been postings about the mods providing the most bang for the buck; i suppose the next step would be to drop weight by changing the wheels, and working on the air intakes, manifolds, etc. But, then you will start to spend money.
Let me know how i can help. All i've done (other than install the correct "racing" seats, factory roll bar and make a few minor cosmetic upgrades) is the diverter valves (switch to Bailey billet ones) and the exhaust (Fabspeed Quiet with cats). The car is plenty quick. |
Kds (Kds)
Junior Member
Username: Kds
Post Number: 213
Registered: 5-2003
| | Posted on Friday, September 26, 2003 - 2:56 pm: | |
Bill.....
As you may remember, I have a GT2 client here in Calgary. We were talking about HP upgrades the other day and my mission is now to accomplish something for him.
I searched rennlist.com and came up empty (not surprising really as it's a new and limited volume car) but was wondering if you had done any research on what can be done to the car as you have one.
I am leaning towards swapping out the OEM 2001 "ECU" for the 2004 unit which retails for $1,700 USD and plugs in for another 22 HP. It's cheap and easy, but beyond that, most of the stuff I have seen is cubic dollars for minimal return and cancellation of the warranty as well.
Do you have any thoughts on this ? The dealer here is happy to oblige with the ECU swap BTW without warranty implications as it is a Porsche unit. |
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