rockitman

You can blip under braking when the clutch is in preparing for the down shift...

I have probably only compiled 250 miles since EP install. It's winter up hear with lots of salt and crap on the roads, so I have elected not to drive it much. Overall, I am very pleased with the results so far. I have a high flow BMC air filter which I plan to install soon and this will only enhance the performance effect. I will be re-dynoing the car with the EP in March or April on the same dyno I used for the stock run. At that point I will be able to better quantify the performance gain. So far the car seems more immediate when reacting to throttle changes and I love the deeper sound the car has. $4,000 is alot granted, but it has really enhanced the driving experience thus far and I have no regrets on the money spent. Take care, Christian

I got it now Steve...guess I'm a little slow today...Feels like Monday, but it's tuesday!!! :-)

I believe those specs are in error. The GT3 does not and will not have a ceramic clutch...

I found slipping a credit card under the rear of the horseshoe and lifting up helps to pry it off.

I started to get the magazine when I purchased my Cayenne back in March. Perhaps it was only sent to new Cayenne owners???

http://www.gruppemna.com/products_order.php?prod_id=41 $1,250 Very attractive piece. Considered it for a while, but ended up going with a BMC F1 free flow panel replacement for the stock airbox. To get the greatest perfromance advantage, the exhaust and intake should be done together. Do a free-er flowing exhaust with less back pressure, then add high flow intake via a perfromance filter or airbox combo like the GruppeM. I asked them for some performance data and they were either unwilling or unable to provide it. They never called me back. Guess it's worth it to give them a call back...With my new exhaust and BMC filter any performance advantages with the Gruppe would be negligible at best. My new filter $125.00 vs. Gruppe setup $1,250. Does'nt sound worth it unless you like the looks(I do), it really dresses up the engine compartment. I may do it down the road if I am board and have nothing else to do on the car which is pretty much the point I'm at now.

Thanks for the heads up Karl...EP told me that he does not expect any O2 sensor problems because of the way they were designed...we shall see. EP does provide a 2 year warranty on the system. The warranty states the following... "Our products are covered with a 2 year warranty providing replacement for any defective part of your exhaust system" Whether any defective part includes the O2 sensors, we shall see. It can be argued that they are part of the exhaust system. Just curious...If they throw a CEL and I replace the sensor(s)...Can the CEL be reset by disconnecting the battery and installing the new sensors, hence resetting the CEL...or does the dealer have to do that???

Thank you. I try to provide DYI's for all modifications I do so as to benefit others...Now to the questions... a) Increased throttle response and more power immediacy. I only have 25 minutes road time with the new exhaust. We had snow and freezing rain the day after install. The roads have subsequently covered with salt and sand and currently the temperature outside is -10 Degrees F...Brrrrrrrr. So it may be a couple of weeks until I give it another drive. The pipe was dynoed before and after at by Europipe...They claim 12hp and 8 lbs/ft of torque as compared to stock with the stock air filter. I will redyno the car with the setup in the spring at the same place I did it when I did a stock test. I developed 348 rear wheel HP stock. The next dyno will be with the EP and a BMC F1 high flow air filter. Here is a link of my car being dynoed on a mustang dynometer... http://awe-tuning.com/pages/gallery/dyno_videos/index.cfm B) No I don't believe there will be a warranty issue. In the US, after market replacements do not void a warranty as long as the reason for the car failure or malfunction is not a direct result of the after market replacement. I really don't see the exhaust causing motor failure or the like. The exhaust system still consists of a complient catalytic converter and a muffler. c) Yes, it is EPA legal. Europipe had the stock catalytic element chemically analyzed and has used the same chemical formulation, but applied in a superior way to the stock cats, even though these cats are 100 cell vs. the 300 cell stock ones. It is OBD2 compliant and has the install points for the lambda pre-cat sensor and the oxygen post cat sensor. There is no check engine light since the cat operates within the parameters the stock sensors detect for. d) The system cost delivered was $4,300. e) While it is not much louder than stock, it was a deeper, warmer sound with a real scream at wide open throttle. I felt the stock sound, while nice, is a little sterile/cold sounding. I really like it. You can hear for yourself on the europipe site. Click on video and select GT3. I believe it is a quicktime (Apple) movie format. http://www.europipe.be/1024.html

My GT3 exhaust upgrade install gallery is back on line for those interested... http://gallery.rennlist.com/gallery/albuq91?&page=1

Exhaust install gallery is back on line for those interested...see link above.

There is a server problem that hosts my gallery. Should be resolved soon.

There seems to be a problem with the rennlist gallery server. It should only be temporary. Yes, I luv the sound and the exhaust is everything I had hoped. Here is a picture of it installed prior to putting the rear bumper on.

For those interested, this is how I replaced the stock system with Europipe(mufflers and race cats). :eek: http://gallery.rennlist.com/gallery/albuq91?&page=1

Here is the link to my install gallery for the Europipe muffler/race cat installation on my GT3. I am sure the procedure will mostly apply to installation of other after market exhaust system products for GT3's and all 996 models. This procedure does not apply to turbo models. http://gallery.rennlist.com/gallery/albuq91?&page=1 :thumbup:

Anyone change their filter??? It probably is similar to the TT filter change. I would like to install a BMC replacement and rather than go by trial and error...would like to know the specific procedure...Does the entire airbox need to be removed from the engine bay or can the airbox cover, closest to the bumper be removed so that the filter can be swapped. Any help would be appreciated. Thanks. I noticed the 996 procedure under Loren's DYI. I now assume that the entire airbox must be removed...Is the correct for the GT3??? By looking in the engine bay, it seems to be the only way to remove the airbox cover...

If your installing the exhaust, you will want to jack it up from the rear. I usually put the jack pad under the center of the engine crankcase to raise the rear of the car high enough so that I can place the jack stands under the main suspension support cross bar member on each side, then lower the car until the support member rests on the jack stand pads...If you car is low, your floor jack may not reach far enough under the car to jack it up from the main support cross member, hence you need to raise it up under the crank case. That is what I needed to do with my GT3...Perhaps your C4 is not lowered and you will have enough clearence to get the floor jack to reach the cross member..

The CDR 23 does have MOST bus and can be connected to the CDC-4. Can you connect a normal external power amp w/o the most connection to the CDR 23 in a GT3???

Check out my DYI on the roll bar install. I have pictures and descriptions on how to remove the seat belt height adjuster

Thanks Loren...I believe the system is bolted and clamped together at the cats,headers and mufflers...So that is good news that the bumper can stay...One less headache. I will have to confirm w/ cargraphic that it is in fact bolted/clamped together at the connection points. They tell me that it's basically a plug and play system for lack of a better expression. My only worries now will be torque values for tightening the various bolts on the headers ect. I have a sneaky suspicion that there will be no instructions which seems par for the course with these german parts, so I may be asking you those torque value questions. Thanks!!! :D

I am planning to upgrade my exhaust system...headers, cats and mufflers. I looked under the car and it appears that I will need to remove the bumper in order to remove the old cats and install the new ones. Anyone done this??? I would imagine it's a simliar procedure to the one that would apply to other 996 models. I am planning(not carved in stone yet) to put in the Cargraphics R-exhaust system with headers, 200 cell cats(OBD2 compliant) and their sport mufflers. They tell me 20+ hp gain, but I am waiting for some proof, such as a dyno chart.... and final pricing. Thanks in advance for yur input... :jump:

Thanks mds...I made note in the instructions of that additional torx screw that needs to be removed in front of the shifter boot.

Well that kind of sux...But no real problem...my beauty will not see the light of day of wheel to wheel racing(There will be the occasional DE's or rented track days)...I will purchase a used cup car for that purpose after I make the move to racing in a couple of years. But before that, I will start my race career in a mini cooper class or one of the scca tuned club cars and get some real race experience before tossing around an expensive porsche on the track in competition...

Very true Karl, it seems I am hell bent on improvements. I guess I would be happy with small hp gain(5hp), with improved sound and throttle response by going with free-er flower, perhaps fabspeed maxflow mufflers and a BMC free-flow filter or the GruppeM airbox with the enclosed cone filter. I do not see any warranty issues there and see a good possiblity of some improvements, albeit not much in the hp & torque department, which I am not too worried about. The wallet will take a little abuse...$1200 with BMC panel replacement filter and mufflers or $2700 if I go with mufflers and GruppeM intake box....hmmmm, what's a guy to do???? Thanks again for responding...I am now done trying to extract any more info in this area...Thanks for your patience.... :notworthy:

You have a stock car with a given air intake velocity and given exhaust backpressure. *If you increase the intake velocity over stock and leave the exhaust the same(stock), you will create more back pressure, hence a drop in hp and torque. *If you have stock air intake and new exhaust with less backpressure, you may lose some low end torque but gain some high end hp. *NOW, if you increase air flow AND reduce backpressure by use of non stock intake box/filter and free-flow exhaust, would'nt it follow that you would have more hp and torque over the same rpm range as the original intake/exhaust setup??? Zat iz ze Qwezchun??? Looking for techinically astute replies based on experience and not old myth's. Thanks... Bottom line, I am interested in BOTH reducing backpressure and increasing intake air flow with the objective of gaining more hp and torque over the same rpm range I have with the stock setup.... :help: