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displaying posts 1 to 6 of 6
| Author | Subject: Centre box cut out |
 Carl GTI
Junior User  Location: Tripoding at Brands Hatch Registered: 11 Aug 2015 Posts: 85 Status: Offline |
Post #1
So the middle box blew a massive hole right in the middle of the box - the gases directly hitting the underside of the car. I cut it out and welded a pipe section in its place. Now the exhaust note has a slightly deeper tone, but no increase in noise levels, at any rev range. Very happy with the result. Probably saved a few grams in weight too. Thought I'd post it up here in case anyone was deciding whether to do the same. |
 Posted 13th Jan 2019 at 17:41
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gnrlee
Forum Admin Location: Leeds Registered: 20 Aug 2005 Posts: 8,878 Status: Offline |
Post #2
I've never blown a mid box beforeWas always the Cat that gave out for me! ________________________________________ Proud Member of the ASTOR Owners Club |
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Posted 13th Jan 2019 at 19:25
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ale624
Regular  Location: bristol Registered: 02 May 2016 Posts: 173 Status: Offline |
Post #3
Interesting! |
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Posted 14th Jan 2019 at 00:39
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miki4
Regular  Location: Cologne Registered: 09 Nov 2015 Posts: 389 Status: Offline |
Post #4
I thought the midbox would minimise resonances espacially at about 3000k rpm. Mine rattles af in that region as presumably the centre tube in the midbox broke and is loose now. |
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Posted 14th Jan 2019 at 07:52
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armzsc6
Seasoned Pro  Location: Crowborough Registered: 22 Mar 2008 Posts: 3,445 Status: Offline |
Post #5
quote: [quote="gnrlee"]I've never blown a mid box before Was always the Cat that gave out for me! What's a cat? I've killed loads of centre boxes on cheaper systems like powerflow, magnex ones are always going. The centre exit system I currently run sounded as raspy as a riced up civic with a fart can on the back when I first put it on. Added the largest stainless centrebox I could find and it sounds much nicer now and noticibly quieter on long runs and idle. Does have a decat and a supercharger though so very different. ________________________________________ Black power baby! SUUUUUPERCHARGED Seat Leon FR TDI 190BHP 300lbft daily gti-6 killer :p 12x 306's owned so far Cambelts, clutches, service work carried out on All makes and models, Peugeot Citroen / mitsubishi specialist. Pug planet / Citroen Lexia diagnostics / code reads available. |
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Posted 6th Mar 2019 at 13:55
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cully
Seasoned Pro  Location: Cullompton Registered: 12 Jun 2013 Posts: 1,093 Status: Offline |
Post #6
i always used to blow the wadding out on track days on the centre boxhad to go back to a std system to meet noise tests |
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Posted 6th Mar 2019 at 18:26
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