Exhaust diameter: Sound difference
#1
Audiworld Junior Member
Thread Starter
Join Date: Apr 2010
Location: Rockville, MD
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Exhaust diameter: Sound difference
1999 A4 2.8 Quattro
Hey guys,
A few years ago I had a custom 2.5" piping cat-back system welded in (stock is 2.00") and just put on a Magnaflow 14815 exhaust on. It's not my first muffler swap, and i like the way it sounds, but it's still a tad loud for my taste, plus there is an obnoxious rattling coming from somewhere, no matter what exhaust i have. I know it's not my cats (those are new) and I just changed my flex pipes so I know it's not those. 2 Questions. First, will going back to 2" make it quieter? And does anybody have any experience with the rattling? I've had 4 mechanics look at it and nobody has a clue! Thanks a lot!
Hey guys,
A few years ago I had a custom 2.5" piping cat-back system welded in (stock is 2.00") and just put on a Magnaflow 14815 exhaust on. It's not my first muffler swap, and i like the way it sounds, but it's still a tad loud for my taste, plus there is an obnoxious rattling coming from somewhere, no matter what exhaust i have. I know it's not my cats (those are new) and I just changed my flex pipes so I know it's not those. 2 Questions. First, will going back to 2" make it quieter? And does anybody have any experience with the rattling? I've had 4 mechanics look at it and nobody has a clue! Thanks a lot!
#2
even though you say cats are new, how old are they? its possible if theyre not genuine audi cats they will go bad within a year and cause the sound your experiencing, its also possible the heat shield around your exhaust is also the cause of the sound
#3
ive got a 99 a4 2.8 Quattro with 2.25" cat back piping(resonator delete) and a Magnaflow 14816 muffler and it sounds good, but has a LOT of drone at cruising speeds(55mph etc) im putting a magnaflow resonator back on it to get rid of the drone heres a link to a vid on my car...
http://www.youtube.com/watch?v=bSMxEh-3sZk
http://www.youtube.com/watch?v=6KG64Hk_wkY
as for the rattling sound im not sure what it could be but the heat sheilds could be it like b5_audi_lover previously stated, and going with smaller piping could quieten it down but it might make it soound raspy idk though. i thought stock piping for our cars was 2.25" though?
http://www.youtube.com/watch?v=bSMxEh-3sZk
http://www.youtube.com/watch?v=6KG64Hk_wkY
as for the rattling sound im not sure what it could be but the heat sheilds could be it like b5_audi_lover previously stated, and going with smaller piping could quieten it down but it might make it soound raspy idk though. i thought stock piping for our cars was 2.25" though?
#4
Audiworld Junior Member
Thread Starter
Join Date: Apr 2010
Location: Rockville, MD
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Yea, I saw your video when I was looking at the muffler before I got it. It sounds great on your car. And sounds kind of similar on mine, except for the high-pitch rattling. I should take a video. And YES, the droning sucks, especially accelerating in higher gear. Resonator is a good idea. And I've heard that about going to smaller pipes, that it may quiet it down, but it will make it higher-pitched. I do want it quieter, but I like the deeper sound.
Regarding the cats, funny you say that. I found out the cats that I put on (Magnaflow 54306) are obviously not only after market, but the WRONG ones for my car. I am in the middle of trying to claim a warranty with Magnaflow (to get Magnaflow 46704, OEM is so expensive)because someone told me it was the right one.
As far as the heat shields go, I have looked at that, and I'm almost positive it's not that.
Regarding the cats, funny you say that. I found out the cats that I put on (Magnaflow 54306) are obviously not only after market, but the WRONG ones for my car. I am in the middle of trying to claim a warranty with Magnaflow (to get Magnaflow 46704, OEM is so expensive)because someone told me it was the right one.
As far as the heat shields go, I have looked at that, and I'm almost positive it's not that.
#5
yea those mufflers sound really good on our cars, but the Cats might be your problem if you accidentally put the wrong ones on, hope ya get it fixed, post a video up here of how your car sounds
#6
Audiworld Junior Member
Thread Starter
Join Date: Apr 2010
Location: Rockville, MD
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Which Magnaflow resonator are you getting? I was doing some reading and a few people said bad things about their resonators, and recommended Dyomax... Any thoughts?
ive got a 99 a4 2.8 Quattro with 2.25" cat back piping(resonator delete) and a Magnaflow 14816 muffler and it sounds good, but has a LOT of drone at cruising speeds(55mph etc) im putting a magnaflow resonator back on it to get rid of the drone heres a link to a vid on my car...
http://www.youtube.com/watch?v=bSMxEh-3sZk
http://www.youtube.com/watch?v=6KG64Hk_wkY
as for the rattling sound im not sure what it could be but the heat sheilds could be it like b5_audi_lover previously stated, and going with smaller piping could quieten it down but it might make it soound raspy idk though. i thought stock piping for our cars was 2.25" though?
http://www.youtube.com/watch?v=bSMxEh-3sZk
http://www.youtube.com/watch?v=6KG64Hk_wkY
as for the rattling sound im not sure what it could be but the heat sheilds could be it like b5_audi_lover previously stated, and going with smaller piping could quieten it down but it might make it soound raspy idk though. i thought stock piping for our cars was 2.25" though?
#7
i just had a Magnaflow 10426 resonator, 2.5 inches in diameter with my 2.25 inch piping, just had it installed today, and the drone was halfway or more eliminated, and got rid of the raspy sound on cold startup, and isnt as obnoxiously loud and still sounds good with that deep throaty tone, im very pleased so far with it. if i had a video camera id post a vid
Trending Topics
#9
Audiworld Junior Member
Thread Starter
Join Date: Apr 2010
Location: Rockville, MD
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Wow, just put the Magnaflow Res and it sounds SO much better. Still sounds really good but without the ridiculous loudness and droning. Perfect as far as I'm concerned! Thanks for the advice bud!
Last edited by Dankrohn; 03-05-2011 at 12:13 AM.
Thread
Thread Starter
Forum
Replies
Last Post
kalivornian
12v V6 Discussion
10
08-08-2005 02:36 PM
coolal
A4 (B6 Platform) Discussion
2
12-28-2004 06:27 AM