Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Recommended Posts

I'm considering removing the muffler from my 04 Cayenne Turbo. I already have the RennTech secondary bypass pipes, but would like the car to be louder. Has anyone done this?

Matt

No muffler at all? I think that would be very loud... perhaps not even legal...

Link to comment
Share on other sites

Dont you still need some exhaust backpressure with a TT?

I'm considering removing the muffler from my 04 Cayenne Turbo. I already have the RennTech secondary bypass pipes, but would like the car to be louder. Has anyone done this?

Matt

No muffler at all? I think that would be very loud... perhaps not even legal...

Link to comment
Share on other sites

Well, though my experience is with other turbo charged cars, I've removed cats and mufflers from three other turbocharged vehicles and....

1. They made more power with the absolute lowest backpressure (post turbo). I don't believe "backpressure" after the turbos is important at all since there is so much backpressure before the turbos. Even at full boost (minimal backpressure pre-turbo) there will still be sufficient backpressure. Like I said, with three other cars, more power was gained when the minimum amount of post-turbo restriction was achieved.

2. The turbos act as mufflers and I still have the main cats, which also act as a muffler. I'm not sure how loud a Cayenne Turbo would be without the rear mufflers. There's a You Tube video that's labeled Cayenne Straight Pipe (or something like that) and it's not what I would call too loud. If anything, my Cayenne Turbo is WAY TOO QUIET now. And the Cayenne as SO MUCH insulation, I’m thinking it couldn’t' get too loud. But, I would like to talk to someone that's done it.

Thanks to you both for the reply. :renntech:

Matt

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.