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How To: Cut a hole in the muffler and make the V8 sound awesome (video in thread)
A number of people have been wondering if you can cut the blanking ports of the stock 958 S muffler out and make the Cayenne sound better. As I plan to cut half my exhaust off eventually, I thought I'd give it a try.
The good news is that you can, it's really easy, and it makes the Cayenne sound like it should have from the factory (and quite similar to the GTS.)
The bad news is it can make your lungs feel itchy if you're not careful.
How to:
1) Get a hole saw attachment for your drill
2) Lay down near the back of the cayenne and locate the blanking plate
3) Drill hole
4) Get some sort of tool, I used a bent coat hanger and fish out all the fiberglass exhaust wadding
4.1) Wonder if the exhaust is secretly magic at all the wadding it contains.
5) Repeat on the other side
6) Enjoy
I would thoroughly recommend wearing an N95 mask, long sleeves and gloves when you're doing this. I'm not sure what exhaust soaked fiberglass will do to the lungs, but I didn't want to find out.
Pictures The hole cut
Some of the wadding out More of the wadding out. This was about 70% of it.
Videos
Cold start. It sounds raspy when cold but once warmed up the rasp sadly goes (I like it.) You do get the rasp if you use more than 1/3rd throttle in a certain rev range but again it goes away when hot. This video makes it sound louder than it is most of the time. https://photos.app.goo.gl/UrAZHYQwsdd59Ce66
In car with window down. Quite hard to tell when cruising. I also realize my car makes odd noises which the phone picked up a lot. https://photos.app.goo.gl/ZmKGSgxba5eMRH7B8
On a motorway cruise at steady speed you're hard pressed to know it's been done. With all the windows up it's quite subtle even when accelerating.
I've now driven for 5 months / around 1000 miles with no issues. I'll try and get a driveby if anyone is interested.
Really, it's what the V8 SHOULD have sounded like from factory. Not intrusive, not loud, but you can now tell you're driving a V8 which I love, without ruining the internal comfort. But, I want it louder so the exhaust will be cut off before the muffler soon
Last edited by TyreReviews; 02-18-2023 at 11:13 PM.
Interesting. I’m planning to get rid of the secondary cats first, but I’ll have to try that after, as I plan on replacing the muffler anyways. Sounds good. I want more rasp out of mine.
A number of people have been wondering if you can cut the blanking ports of the stock 958 S muffler out and make the Cayenne sound better. As I plan to cut half my exhaust off eventually, I thought I'd give it a try.
The good news is that you can, it's really easy, and it makes the Cayenne sound like it should have from the factory (and quite similar to the GTS.)
The bad news is it can make your lungs feel itchy if you're not careful.
How to:
1) Get a hole saw attachment for your drill
2) Lay down near the back of the cayenne and locate the blanking plate
3) Drill hole
4) Get some sort of tool, I used a bent coat hanger and fish out all the fiberglass exhaust wadding
4.1) Wonder if the exhaust is secretly magic at all the wadding it contains.
5) Repeat on the other side
6) Enjoy
I would thoroughly recommend wearing an N95 mask, long sleeves and gloves when you're doing this. I'm not sure what exhaust soaked fiberglass will do to the lungs, but I didn't want to find out.
Pictures The hole cut
Some of the wadding out More of the wadding out. This was about 70% of it.
Videos
Cold start. It sounds raspy when cold but once warmed up the rasp sadly goes (I like it.) You do get the rasp if you use more than 1/3rd throttle in a certain rev range but again it goes away when hot. This video makes it sound louder than it is most of the time. https://photos.app.goo.gl/UrAZHYQwsdd59Ce66
In car with window down. Quite hard to tell when cruising. I also realize my car makes odd noises which the phone picked up a lot. https://photos.app.goo.gl/ZmKGSgxba5eMRH7B8
On a motorway cruise at steady speed you're hard pressed to know it's been done. With all the windows up it's quite subtle even when accelerating.
I've now driven for 5 months / around 1000 miles with no issues. I'll try and get a driveby if anyone is interested.
Really, it's what the V8 SHOULD have sounded like from factory. Not intrusive, not loud, but you can now tell you're driving a V8 which I love, without ruining the internal comfort. But, I want it louder so the exhaust will be cut off before the muffler soon
The PO had it done. Not sure exactly who did the work. It's basically a valve like this before the muffler. When closed, it sounds stock. Open, it sounds like some crazy exotic LOL https://www.spelabautoparts.com/prod...RoCqesQAvD_BwE
The PO had it done. Not sure exactly who did the work. It's basically a valve like this before the muffler. When closed, it sounds stock. Open, it sounds like some crazy exotic LOL https://www.spelabautoparts.com/prod...RoCqesQAvD_BwE
Lots of spots do that locally in Toronto. Some cars sound really bad , the v8’s sound pretty Damn good.
It’s super loud, but I debated trying it out.
it’s not factory. It’s exactly as the link you sent.
Lots of spots do that locally in Toronto. Some cars sound really bad , the v8’s sound pretty Damn good.
It’s supset loud though but I debated trying it out.
it’s not factory. It’s exactly as the link you sent.
A flap opens/closes via remote
Yea, I can see it sounding crappy on some cars. It does sound glorious on the NA V8 of the GTS but I wouldn't want it open all the time either; it's great for those spirited backroad drives but I leave it closed for most normal driving situations. I basically treat it as Sport Plus mode LOL
Yea, I can see it sounding crappy on some cars. It does sound glorious on the NA V8 of the GTS but I wouldn't want it open all the time either; it's great for those spirited backroad drives but I leave it closed for most normal driving situations. I basically treat it as Sport Plus mode LOL
Any chance you get a video of them open/closed when parked ?
02-18-2023, 11:10 PM
How To: Cut a hole in the muffler and make the V8 sound awesome (video in thread)
