Do exhausts usually get louder when they warm up?

1. SaxoAlex Frequent Poster Joined: Mar 2007 Nantwich Posts: 692 '07 zetec S

   #1 12th June 2008, 20:22

   Just wondering because fitted my new backbox today, and its quite loud at first, but after about 5mins, its suddenly gets even louder
   
   Question number 2.....
   
   ...do backboxes get louder or quieter over time from when they are new? Like when they get more worn in???
   
   Thanks
2. Jimmy-Boy Saxperience Post Whore Joined: Jul 2006 Suffolk Posts: 7551 N/A 200bhp+ per ton 106 gti

   #2 12th June 2008, 20:27

   When backboxes start off you are better to wear them in for more precise nicer notes.
   
   so when there worn in they will sound more crisp deeper and louder how the manufacturers wanted them to sound as for exhausts being louder when they are warmer i have no idea lol
3. RJ303 Established Member Joined: Oct 2006 Kingston Upon Hull area Posts: 1642 MG ZT CDTi Citroen C4 Picasso VTR+

   #3 12th June 2008, 20:39

   Mine seems to sound better once warmed, not sure about been louder.
4. user_11067 Saxperience Forum Bum Joined: Aug 2006 Ashford kent Posts: 3161 PoP! bAnG! pOp! BaNg!

   #4 12th June 2008, 20:51

   not so sure about louder but mine definately sounds abit better when its warmed right up.
   
   like when you come of the motorway.
5. -Richard- Saxperience Forum Bum Joined: Jul 2007 Nottingham Posts: 4882 Ford Transit

   #5 12th June 2008, 23:19

   mine sounds better when the engine temp gets up to normal from starting from cold
6. pjsaunders06 Saxperience Forum Bum Joined: Feb 2007 Portsmouth Posts: 2882 54 Audi A4 Estate 1.9TDi

   #6 12th June 2008, 23:29

   they have to wear in mate, once they have warmed up and been driven for a while then the noise gets better
7. boarer2004 Saxperience Forum Bum Joined: Dec 2007 Brighton, East Sussex Posts: 3577 saxo 1.4 westcoast, vts

   #7 12th June 2008, 23:36

   wired mine sounds louder when cold when warms up get quieter
8. saxodanny Infrequent Poster Joined: May 2008 Warrington Posts: 215 Saxo VTR MK2

   #8 12th June 2008, 23:40

   i used 2 have a punto n had a peco system on it, wen it got warm it use 2 pop and fart n was alot louder, i not got 1 on my saxo yt
9. Coonper Saxperience Post Whore Joined: Aug 2007 Coventry Posts: 5182 Lupo GTI

   #9 13th June 2008, 10:05

   When they warm up they usually popple more, so that makes them louder.
   
   They are more likely to popple more when warm, as the unburnt fuel is at a higher temperature.
   
   And you will also find that the longer your exhaust is on the car the louder it will get. Then after about 1-2 months it will sound its best when all coked up.
10. Cainevtr Regular Poster Joined: May 2008 Posts: 249

    #10 13th June 2008, 10:07

    My little fiesta i had before my saxo, after a long journey if used to sound mint because the exhaust expanded, apart from the chain driven noise lol
11. immense Established Member Joined: Jan 2008 Northampton Posts: 2241 Citroën Saxo VTR

    #11 13th June 2008, 10:49

    They do get louder as they they get warm, the bore expands that's why and over time they'll get louder once settled in, mine took about 200 miles worth of driving before it bedded in, now sounds really nice Hope that helps!
12. dannyhall Established Member Joined: Oct 2007 Stoke on Trent Posts: 2130 Premier Ed. Milano Red CTR

    #12 13th June 2008, 10:53

    My exhaust flames more when it isnt as warm. But when on a long steady drive at 2.5k max, then nail it, it wont 'bang' as much, but more popping is heard! Instead of a massive bang then a flame...
    
    Backbox's arent enough for me! LOL.