cat bypass + cup pipe + gutted secondary?
02-06-2015 | 03:34 PM
#16
Rennlist Member
Joined: May 2001
Posts: 13,311
Likes: 647
From: Auckland, New Zealand.
This is a cat bypass and G pipe.
the car builder prefers it to a primary bypass as it doesn't risk splitting the secondary.
I have a spare secondary I've been planning to play with. Ideally I would like a switchable bypass in it. As of yet I haven't seen anyone blaze a trail on this with the stock muffler so I'm keen to see what you do here.
I have a spare secondary I've been planning to play with. Ideally I would like a switchable bypass in it. As of yet I haven't seen anyone blaze a trail on this with the stock muffler so I'm keen to see what you do here.
02-06-2015 | 05:19 PM
#17
Thread Starter
Banned
Joined: Jun 2013
Posts: 681
Likes: 2
From: NNJ
And I just found this on pelican. looks like someone else has done it. but not too much info.
THis is a primary muffler bypass pipe for the Porsche 911/964 C2 & C4 1989 thru 1994, When purchased I was told that it was made for DP Kremer by a company named Shubert. Instead of being a straight bypass pipe has a small resonator chamber which cuts the noise down some as opposed to the straight through pipes like Dansk, Schnell or RUF. This would allow you to use a G-Pipe while not being too loud and lose the Secondary Muffler on the car so the neighbors would not complain. This was on my car for about four years and on trade-in the dealer wanted it stock. So I did return it to stock and am now selling off bits and peces that I can not use on my 993.
This is an easy upgrade that loses weight in the back and makes the car sound beefier.
This is an easy upgrade that loses weight in the back and makes the car sound beefier.
02-07-2015 | 01:23 PM
#18
Three Wheelin'
Joined: May 2012
Posts: 1,350
Likes: 4
From: NYC
02-12-2015 | 05:47 PM
#19
Racer
Joined: Dec 2007
Posts: 253
Likes: 19
From: Warsaw Poland (Europe)
I already own Cup pipe in my 964. But a few days ago i decided to replace secondary muffler with a G pipe.
So i did ...
Just after relplacing i took a ride ... and after 10 km, i came back to garage and replace G pipe with secondary muffler.
Conclusion: Cup pipe or G pipe ... Both? Forget about it. Is too loud! But sound was amazing ❤️❤️❤️
So i did ...
Just after relplacing i took a ride ... and after 10 km, i came back to garage and replace G pipe with secondary muffler.
Conclusion: Cup pipe or G pipe ... Both? Forget about it. Is too loud! But sound was amazing ❤️❤️❤️
02-12-2015 | 05:57 PM
#20
Rennlist Member
Joined: May 2001
Posts: 13,311
Likes: 647
From: Auckland, New Zealand.
I already own Cup pipe in my 964. But a few days ago i decided to replace secondary muffler with a G pipe. So i did ... Just after relplacing i took a ride ... and after 10 km, i came back to garage and replace G pipe with secondary muffler. Conclusion: Cup pipe or G pipe ... Both? Forget about it. Is too loud! But sound was amazing ❤️❤️❤️
