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Old 06-12-2009, 11:33 PM   #11
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Ah bollocks then ... i best have one ! ... but does THE noise come from exhaust, or air induction ...or a combination of both as in .... get the exhaust out more efficiently and air goes in quicker ..and noiser ?
Off to bed for some self love ...nite all !
youll get some exhaust note as well as induction roar Duncan

it may affect the noise inside the car but if you keep standard centre section this seems to be best bet to avoid headaches!

bhp improvements virtually NONE but youll save quite a few kgs
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Old 07-12-2009, 12:07 AM   #12
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Originally Posted by mattCSLnut View Post
Remember that I already have Supersprint 100 cell Race cats + stainless middle section on my CSL so with the Supersprint Race light weight back box as well, I reckon I'll be very unwelcomed at most Track Days, especially Bedford Autodrome
I doubt it - you will be fine at most tracks bar Bedford...

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it may affect the noise inside the car but if you keep standard centre section this seems to be best bet to avoid headaches!
Agreed
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Old 07-12-2009, 01:47 AM   #13
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Just did a tunnel run tonight which was quite orgasmic, cant imagine it with this backbox on aswell!!
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Old 07-12-2009, 07:52 AM   #14
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I need to hear one of these in the flesh methinks ... and make a judgement... so assuming my complete auspuffer system is stock, (I suppose i ought to check what i have first !) what do you Guru's recommend? So far I have retain OEM centre section to prevent the old pain in der kopf.
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Old 07-12-2009, 08:19 AM   #15
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what do you Guru's recommend?
Standard system - except backbox, the perfect compromise between achieving a little extra aggression under acceleration whilst minimising additional cabin drone.

My system is ideal imho: Standard + SS lightweight race rear silencer = 97db on noise tests.
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Old 07-12-2009, 10:06 AM   #16
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Rob
is there any track your race box has tripped the noise meters on or have you done Bedford with it ?
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Old 07-12-2009, 10:20 AM   #17
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rubbish Matt

you may be unlucky at Bedford with a SS race box ........ depending upon weather conditions but nowhere else worth going to is gonna be a problem - stop scaring people off buying unless you have facts

Speaking of facts, do U have any re: CSL exhaust, worth mentioning ? U big girl's blouse
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Old 07-12-2009, 10:32 AM   #18
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Standard system - except backbox, the perfect compromise between achieving a little extra aggression under acceleration whilst minimising additional cabin drone.

My system is ideal imho: Standard + SS lightweight race rear silencer = 97db on noise tests.

I hear U Rob, but I don't have that option of Standard Cats & middle section and would like to utilise what I do have already. Last thing I want is to end up loosing my money on another Back box experiment, which makes my CSL too loud and unbearable, like the Milltek MK2 saga. Last time I was measured for noise was @ Brands Hatch, it was 89 dB with SS 100 cell Racing Cats, SS middle section and O.E. CSL specific but heavy, back box . I'm guessing here but with the SS Race light weight + my existing set up I'm going to be at around 100 dB, if not more, hence the slightly more sensible Supersprint option
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Old 07-12-2009, 11:11 PM   #19
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Last thing I want is to end up loosing my money on another Back box experiment,
cmon Matt, ill give yer 30p in the pound of you dont like it
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Old 07-12-2009, 11:47 PM   #20
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Anyway I sent Simpson's an email today, will see what happens, if not ill email everywhere I find but I hope 5 is enough...
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