Exhaust Noise problem.. (2 garages don't know the problem)

1. VTHall Saxperience Forum Bum Joined: Apr 2010 Telford Posts: 4501 Black corsa c SXI.

   #1 20th April 2011, 17:03

   Ok, so firstly i had a sportex racetube with a sportex backbox, loud as fook, typical chavy exhaust so changed it for a piper, but with still the same centre section (sportex racetube)
   
   Wasnt very loud at all, so thought the backbox wasnt good, but the backbox and centre%2
2. gaz4399 Saxperience Forum Bum Joined: Jul 2007 Chester Posts: 2850 1275 mini

   #2 20th April 2011, 17:08

   is yours a 98bhp vtr with cat in manifold?
3. VTHall Saxperience Forum Bum Joined: Apr 2010 Telford Posts: 4501 Black corsa c SXI.

   #3 20th April 2011, 17:16

   Quote:

   Originally Posted by gaz4399 is yours a 98bhp vtr with cat in manifold?

   no, cat is or was in the the centre section and its a 90bhp mk1.
4. gaz4399 Saxperience Forum Bum Joined: Jul 2007 Chester Posts: 2850 1275 mini

   #4 20th April 2011, 17:17

   Quote:

   Originally Posted by VTHall no, cat is or was in the the centre section and its a 90bhp mk1.

   ok, you sure you wasn't mistaking the blowing for exhaust note?
   
   edit, one of my old cars blew under the gear stick and was loud inside the car while driving
5. VTHall Saxperience Forum Bum Joined: Apr 2010 Telford Posts: 4501 Black corsa c SXI.

   #5 20th April 2011, 17:19

   Quote:

   Originally Posted by gaz4399 ok, you sure you wasn't mistaking the blowing for exhaust note? edit, one of my old cars blew under the gear stick and was loud inside the car while driving

   nope, i took it to the garage and let them drive it onto the ramps, it was loud as fuck and sounded mint, it was just the blowing between the mani and the decat : the decat pipe and backbox has been welded together so no blowing from there.
6. gaz4399 Saxperience Forum Bum Joined: Jul 2007 Chester Posts: 2850 1275 mini

   #6 20th April 2011, 17:25

   cant really suggest anything solid apart from maybe the new exhaust hasnt bedded in yet. Alternatively the loud one may have knackered baffles due to age, oil from knackered stem seals inside etc
7. VTHall Saxperience Forum Bum Joined: Apr 2010 Telford Posts: 4501 Black corsa c SXI.

   #7 20th April 2011, 17:29

   Quote:

   Originally Posted by gaz4399 cant really suggest anything solid apart from maybe the new exhaust hasnt bedded in yet. Alternatively the loud one may have knackered baffles due to age, oil from knackered stem seals inside etc

   possible but most exhausts should be loud with a decat shouldnt they?
8. gaz4399 Saxperience Forum Bum Joined: Jul 2007 Chester Posts: 2850 1275 mini

   #8 20th April 2011, 17:31

   Quote:

   Originally Posted by VTHall possible but most exhausts should be loud with a decat shouldnt they?

   i would of thought so tbh. A piper will be quieter than you old one but it should still sound great with a decat and 4-1. My piper was epic on my old vts, it wouldn't shut up lol
9. VTHall Saxperience Forum Bum Joined: Apr 2010 Telford Posts: 4501 Black corsa c SXI.

   #9 20th April 2011, 17:37

   Quote:

   Originally Posted by gaz4399 i would of thought so tbh. A piper will be quieter than you old one but it should still sound great with a decat and 4-1. My piper was epic on my old vts, it wouldn't shut up lol

   see, my sportex was loud, but neither my ss or piper is
   wierd as.
10. gaz4399 Saxperience Forum Bum Joined: Jul 2007 Chester Posts: 2850 1275 mini

    #10 20th April 2011, 17:43

    do you know which exhaust part is the offending part exactly?
    
    you may find the cheaper sportex uses a different bore, im not sure though. Just thinking of ideas.
11. KamRacing Saxperience Addict Joined: Nov 2006 A farm shed in Aylesbury Posts: 14916 Corolla AE86 Peugeot 205 B18C (in bits)

    #11 20th April 2011, 17:43

    so whats the problem? Its too quiet?
    Piper use an 8" silencer cylinder. What is the sportex? 6"?
    If its the same size then cheaper or less sound damping material is the reason for the sportex being louder.
12. VTHall Saxperience Forum Bum Joined: Apr 2010 Telford Posts: 4501 Black corsa c SXI.

    #12 20th April 2011, 17:44

    Quote:

    Originally Posted by KamRacing so whats the problem? Its too quiet? Piper use an 8" silencer cylinder. What is the sportex? 6"? If its the same size then cheaper or less sound damping material is the reason for the sportex being louder.

    kam, yes its too quiet.
    my supersprint atm sounds nothing louder than a normal exhaust, only when it was blowing slightly it was loud and sounded class.
13. VTHall Saxperience Forum Bum Joined: Apr 2010 Telford Posts: 4501 Black corsa c SXI.

    #13 20th April 2011, 18:30

    BUMP..