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FisterD replied to darrenmchilton's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)I do quite a few with ceramic coating. It is optional. Ceramic coating reduces the radiant heat from the mufflers. Since they are tucked up next to the motor, this a good thing. We media blast the mufflers before applying the ceramic coating. This gives the mufflers another layer of protection which will also help with their longevity. Is it necessary...no Is it a nice option that functions well...yes
Could you elaborate on the small loss in low end power with the Fister exhaust? How did it manifest itself? I don't have Variocam issues, but am considering the Fister exhaust for my '99 996. The Fister mod produces great sound, especially above 2800 rpm. However, I did notice a slight loss in power when letting out the clutch. You needed to pay a little more attention and give it a little more gas. Also, my 2004 has Variocam Plus and when the intake valves switch from small to large lift you could really feel the surge much more than with the stock mufflers. I went back to the stock mufflers and could easily notice the difference. From what I read, some back pressure is a good thing and helps low end power. Although I loved the sound made with the Fister mod I was willing to give that up for easier starts and minimal surging. I also tried 997S headers with stock mufflers and had similar observations. I ended up going back to the stock headers. Currently I am running mufflers that are completely gutted, everything inside removed. The mod was done by Hergesheimer. They produce a Ferrari-ish type sound and surprisingly are just a little louder than stock. It sings at 3,500rpms. Let me state that you will not lose power with my muffler modification. The small portion of exhaust that is allowed to bypass the muffler will not decrease the exhaust gas pressure you will see in your headers which is where hp/torque is lost/gained. Your cat creates the backpressure at the headers and changing anyhing after that (mufflers) is virtually insignificant. My modification is basically a mock version of the Porsche PSE, which also does not cause power loss. A vast majority of people running my mufflers tell me they think their car actually feels faster, which is also a placebo effect of having a great sounding car. As far as a gutted muffler goes, you have exhaust gases going into a big empty can, bouncing around, trying to find their way out, with no actual path to follow. Not a very efficient design IMHO.
It is not as loud as a muffler bypass. It is only a partial bypass. A lot of the exhaust still passes through the muffler. Just a portion goes through the bypass. It is louder than stock at idle, but not annoyingly loud at all. When you are heavy on the gas, backpressure in the muffler forces more through the bypass, and it sounds great!
If your referring to FisterD's response. The left side is the MK2 and the right side MK1 type mod. I don't follow the MKI, MKII designations...sorry or the confusion. I classify my muffler mods by "stages". The less aggressive, less loud being "I", and the louder , more aggressive being "II" My Stage I (MkII) is the milder, less aggressive mod. Connecting the third unused port to the outlet. My Stage II (MkI) is louder and more aggressive sounding. connecting the inlet directly to the outlet. Hey fisterD. What mod did you do on your exhaust? Is it 3.4 or 3.6? Is it a significant difference. I remember seeing a reply on thread indicating the mod for "Stage I" MkII doesn't pose any signifcant difference on a 3.4. Anybody else who have a 3.4 exhaust that can comment on this. Please indicate if the mod is MK1 or MK2. All your inputs will be appreciated. Stage I (mkII) only works on 3.6 mufflers. Stage II (mkI) works on both 3.4 and 3.6 mufflers I have a 993 and run Fister Stage IIs on it......and it sounds wicked! I have done many 996 Stage II mods to 3.4 mufflers with great results. I use a larger diameter pipe than most.
If your referring to FisterD's response. The left side is the MK2 and the right side MK1 type mod. I don't follow the MKI, MKII designations...sorry or the confusion. I classify my muffler mods by "stages". The less aggressive, less loud being "I", and the louder , more aggressive being "II" My Stage I (MkII) is the milder, less aggressive mod. Connecting the third unused port to the outlet. My Stage II (MkI) is louder and more aggressive sounding. connecting the inlet directly to the outlet.
Boxster muffler mounts vary by year model somewhat. perhaps it would help if you said what year/engine. Actually, what I have is the stainless tubing to do the mod on a Boxster, so I'm not sure how important the year is. Is there a big difference in muffler design between the different years?
Anything like this for the 986 (base Boxster) ??? Just email me directly a : firstname.lastname@example.org I'm actually working on a Boxster mod now, but my test vehicle just got totalled! So, I need a test car in Northern Cal....anyone interested?
Chuck, good to hear from you again. Yes. you were one of my first 996 modifications. I had been doing only 993's before that. You should stop by and see the shop sometime. I just installed a 2 post lift. The shop should be completed sometime this summer, and I'll be having a get together of some sort to celebrate. You'll definitely get an invite.
This is a 996 with the mod. Here is a 996 with Stage II (MKI)996 Stage II I prefer to do the mods all in stainless. Stainless tubing and weld it with stainless.
Yes, Thats me. I have done many of these mods for guys all over the US with great results. If you would like more info, please contact me directly at :email@example.com It is definitely a worth-while modification!