964C4

My car currently has Cargraphic Super Sound side mufflers

I would like to install 200 CPSI sport cats

My first option is Cargraphic. The piping is same as stock

I also like the GMG X pipe, but it seems (not assuring on my side) this configuration does not produce power

Another option is Fabspeed U pipe, but know knows about sound

Is is worth it or not to add sport cats ? Can I expect 5-7 HP and freer flow of exhaust gases ?

gman3280

GMG claims up to 15hp with their sport cat.

runet

How about the M&M:
http://www.fvd.de/us/en/Porsche-0/99..._X-Design.html

DHI

Subscribed...

serickson

To be quite honnest I never noticed any power difference. This could have been because most of my projects lapse over the winter and most of my improvements in lap time are probably more related to more seat time. I have the fab speed mufflers, X-pipes with 200 cell sport cats. I have posted dB ratings in another post, and yes it is louder than stock. More power?? Replacing the stock cats with the 200 cell and X-pipe made a deeper sound but I could not tell you if the car has more noticable power. If you really want a loud car (club racer) in my opinion you must remove the muffler or use a more open exhaust. Going the same route that I went will give you a managable increase in noise, no CEL's. If you are trying to achieve a club racer sound go with the muffler by-pass. If trying to get more power for better lap times your money is better spent on spending more time in the car or coaching.

Dervish

Having gone with fvd i'd recommend the GMG, both for product and service.

Q&A

I recently took my floor and back carpets out. Huge difference in interior noise. The LWFW now also really comes alive. Listen and compare to earlier video's: http://www.youtube.com/user/ParadisePorsche

Read somewhere this carpet delete saves around 20 Kg. Personally i would keep my exhaust "less noisy" as possible with all the strict regulations on circuits. Would be a bummer if you're excluded from a trackday because of that. If you want to gain 20 HP or so, maybe you should loose some weight in the rest of the car instead.

DHI

What was the story?

LC MotorSports

I would go with the Cargraphic system... Give me a call and we can set you up with what you need.

Dervish

Full write up with pics and videos soon.