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New exhaust or muffler delete?

 
  #1  
Old 11-03-2014, 07:14 PM
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Default New exhaust or muffler delete?

Ive seen these kits like mina or spires and of course searched this forum but my thought is, wouldnt taking out the muffler and going with straight pipes be better/the same as far as replacing the current mufflers with one of these kits in excess of $700 and be a heck of a lot cheaper in the process?

Typically you go for one of these systems for sound so how would having no muffler in the way not be better than a "high performance" muffler?

Thanks in advance
 
  #2  
Old 11-04-2014, 09:10 AM
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Have you ever heard a car with no muffler? It will be crazy loud and obnoxious. And you might even lose some performance in parts of the powerband due to the lack of backpressure.
 
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Old 11-04-2014, 10:00 AM
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I have to disagree with Kryanite here. Paramount makes a system for the XF's that are literally axle back straight pipes. Taking off the mufflers does not remove the resonators which is where a lot of the sound deadening comes from. It is by no means quiet, but you're not going to be losing performance.

Here is the link to the sound:

I emailed Paramount and this is the axle back system. I have reached out to a guy I know that does custom fabricating of exhausts. I am guessing it will be under $300 to get this same setup. This is an image for the axle back straight pipes:
 
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Old 11-04-2014, 11:39 AM
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Thor, you are absolutely correct if you leave the two resonators in place, it will be acceptable, but loud. Sorry for the confusion.
 
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Old 11-04-2014, 03:48 PM
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It depends on what engine you have.


I've had a paramount back end system on a 4.2NA (which retained mufflers but they were smaller, not a lot bigger than the pipes) and it was perfect for the 4.2. It gave a really nice Aston sound but retained the throbbiness of the 4.2, with zero drone. I put it on to my 5.0NA when I got it and it didn't sound anywhere near as good, it was quite raspy and metallic.


I've now (with the XKR 5.0 SC) done the resonator delete with an X pipe. It sounds great when you put your foot down, very little drone (maybe a touch if the car is say in 5th but should be in 4th at low revs), but has more of a howl about it than a throb. Everyone loves it, but I still think the 4.2 with the paramount exhaust sounded better.


I just listened to the clip above, I think that would be the 4.2.
 

Last edited by BruceTheQuail; 11-04-2014 at 03:51 PM.
  #6  
Old 11-04-2014, 04:10 PM
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Originally Posted by BruceTheQuail View Post

I just listened to the clip above, I think that would be the 4.2.
You're correct. When I emailed them, they said that it was a 4.2 Supercharged that is in the video.
 
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Old 11-04-2014, 04:31 PM
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Well that would be perfect since I have a 4.2 SC. Thanks for the input guys. I mean it made sense to me but then again I dont have that much experience with this specifically. I know someone who can fabricate that paramount kit so it would probably be even less than $300.

I want it to sound tougher for sure and want the quad tip look. Im only looking to either remove or gut the last mufflers and leave everything in front of the last bend intact.

So if they sell something thats exactly what Im looking to do, I guess theres really no harm in doing it.
 
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Old 02-08-2015, 11:09 AM
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So I did it, have had it for a while now and it does sound great. Exactly what I wanted from the outsiders perspective. However inside the cabin there is a drone at low RPM's going around 20 mph and going around 80 mph on the highway. In between those speeds its not bad but for long trips and leaving my neighborhood it can get annoying.

Has anyone ever used sound deadening sheets to correct this? Would this work?

There is a lot of space above the pipes now with the mufflers gone so my idea was to stick a few sheets up in that area and hopefully quiet the cabin drone a bit. Maybe even under the spare tire as well.

Other than this minor issue it sounds awesome and I get compliments on it all the time.

Thanks
 
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  #9  
Old 03-16-2019, 02:28 AM
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Can we get a video?
What kind of decibels are you getting outside?

Thanks in advance!
 

Last edited by tarokyama; 03-16-2019 at 02:30 AM.
  #10  
Old 03-21-2019, 02:19 AM
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Originally Posted by Thor82 View Post
I have to disagree with Kryanite here. Paramount makes a system for the XF's that are literally axle back straight pipes. Taking off the mufflers does not remove the resonators which is where a lot of the sound deadening comes from. It is by no means quiet, but you're not going to be losing performance.

Here is the link to the sound:
Jaguar XF Exhaust System - High Performance Jagaur XF Exhaust - YouTube

I emailed Paramount and this is the axle back system. I have reached out to a guy I know that does custom fabricating of exhausts. I am guessing it will be under $300 to get this same setup. This is an image for the axle back straight pipes:
I am absolutely dumbfounded that Paramount wants $1,200 US for a pair of pipes with an exhaust tip on them! WTF!?
 
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Old 03-21-2019, 02:16 PM
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Originally Posted by Etip View Post
I am absolutely dumbfounded that Paramount wants $1,200 US for a pair of pipes with an exhaust tip on them! WTF!?
No doubt! It's insane that they think they can charge that.
Here's a short video of mine. It's a bit louder now as I had to replace one of my Cats and I went with a RockAuto one that's a little less restrictive
https://youtu.be/4Kae0f7k2tk
 
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Old 03-21-2019, 03:53 PM
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Originally Posted by Thor82 View Post
No doubt! It's insane that they think they can charge that.
Here's a short video of mine. It's a bit louder now as I had to replace one of my Cats and I went with a RockAuto one that's a little less restrictive
https://youtu.be/4Kae0f7k2tk
Car sounds great. Did you just take it to and exhaust shop and say "use these tips and put a straight pipe in"?
 
  #13  
Old 03-24-2019, 07:58 AM
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neither and both - electric cutouts!
 
 
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