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Author backbox for 1.4 8v
Jase1.4
Member
Registered: 8th Sep 06
Location: west mids - black 1.8 astra coupe
User status: Offline
5th Jan 07 at 14:12   View User's Profile U2U Member Reply With Quote
hi folks, at the moment ive got a straight through de-cat pipe with the silencer removed going to a janspeed twin dtm backbox

but ... im not gettin a deep noise it sounds more like a modded old scule beetle (a lot of people think so anyway lol) and i do like it but im after a deep noise and i have been told it is because of the box - a better quality one such as peco or something would give a much better sound apparently

so anyone got anythin for sale?? would collect in the mids area
Jase
Jase1.4
Member
Registered: 8th Sep 06
Location: west mids - black 1.8 astra coupe
User status: Offline
17th Jan 07 at 19:55   View User's Profile U2U Member Reply With Quote
up
CorsaGSiTurbo
Member
Registered: 21st Feb 05
Location: Sussex
User status: Offline
17th Jan 07 at 21:52   View User's Profile U2U Member Reply With Quote
I've got a Mongoose twin dtm backbox. I always found it gave a nice deep sound. It's in good condition.
Will sell for £45 posted if you're interested.
Black Mamba
Member
Registered: 28th Feb 06
Location: Derbyshire
User status: Offline
20th Jan 07 at 19:33   View User's Profile U2U Member Reply With Quote
I think your lack of deep noise is down to your lack of back pressure, removing your baffles and cat makes it flow free'er but will give more raspy than deep buurble, you need a big rally spec back box to help i think
craig_s
Member
Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
21st Jan 07 at 17:14   View User's Profile U2U Member Reply With Quote
yeh the less boxes you have in your system equals more back pressure wich means a loud raspy sound.put a silencer in the system.

[Edited on 21-01-2007 by sri power]
Jase1.4
Member
Registered: 8th Sep 06
Location: west mids - black 1.8 astra coupe
User status: Offline
21st Jan 07 at 19:11   View User's Profile U2U Member Reply With Quote
theres a thought. i took the silencer out as the exhaust was quite quiet on its own, and a mate had a decat he didnt want so did them both at the same time.

what if i put the cat back on but left the silencer out? rekon that would sound better?

cheers for the replys lads
craig_s
Member
Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
21st Jan 07 at 19:32   View User's Profile U2U Member Reply With Quote
i would just put the silencer back in there will be less restriction than with a cat on.
Jase1.4
Member
Registered: 8th Sep 06
Location: west mids - black 1.8 astra coupe
User status: Offline
6th Feb 07 at 00:58   View User's Profile U2U Member Reply With Quote
new box anyone?

 
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