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Hello to you all. I 've been looking to this site for a while now, learning stuff about these cars. Thank you for this.
I drive a 2005 996 GT3 clubsport. most of the time on the road. and a couple of times a year in track with some friends.
i have put a lot of original RS stuff on my car (steering wheel, gearlever, rear spoiler, mirrors, bootlid, front bumper, ram inlet...)
I also wanted to change the look of the back of the car. I like the look of the cups with the central exhaust.
so i bought the rear bumper and searched for a cup exhaust.
I found all parts second hand and adapted them so they fit the street car with the Lambda sensors.
outside the car the sound is great, but inside it is way too noisy (around 105-107dB at earlevel when drving between 2000-3000rpm)
i have the 110 dB exhaust.
i found out that Porsche also has a 103dB exhaust. is this any better inside the cabin? less droning (is this the correct term) noise?
the collector (at the cylinders) for this 103dB exhaust seems to be very expensive from Porsche, and you need 2.....
does anyone know the real difference between the 103-110dB exhaust?
or does anyone have pictures of the exhaust? to compare?
Why not do the oem 997 gt3 exhaust with the cup side bypass pipes? That’s what I did and love the sound! Def not too loud. Did you still the rear bumper bar yourself? How much weight reduction? I need to do that!
I have that same exhaust. Is your muffler a 997 part #? I don't mind the sound inside much myself.
no 996 110db supercup exhaust
number ends with 92
as said outside sounds great
but inside is painfull
and before i buy a 103 exhaust i want to be sure this fits and makes driving bearable again
does someone know if 110 db headers fit the 103 db exhaust?
any photos of a 103 db exhaust around?
Why not do the oem 997 gt3 exhaust with the cup side bypass pipes? That’s what I did and love the sound! Def not too loud. Did you still the rear bumper bar yourself? How much weight reduction? I need to do that!
very hard to find affordable 997 parts here
any idea of the cup tubes parts numbers?
i will still needs cats to stay streetlegal
do you still run cats?
thx
hgo
Yup. Running stick 997 gt3 headers which have the integrated cats. They are coupled to the cup bypass pipes from fan speed and oem 997gt3 center section.
I put a 997.2 Cup exhaust on my 6GT3. It has a similar header/cat combo and has a single pipe going into the center muffler from each side. I welded an O2 sensor on after the cat so I get no CEL. I read that it is about 106db at WOT. I don't have any drone.
02-14-2018, 09:46 AM
996 cup exhaust
