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Old 20-10-2011, 08:48 PM
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Lucky Lucky is offline
'2 Spanners Qualified Technician' - If your job requires more then 1 spanner I'm your man !!!!!
 
Join Date: Sep 2008
Location: Telscombe Cliffs
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Quote:
Originally Posted by SilverSurfer View Post
You seem to of covered most :

MillTek
Revolution
RCM
GRD
Hayward & Scott

Milltek may be too quite if you have a resonated centre or resonated downpipe. But not sure what they are like without.

Revolution is also quite quiet

GRD is what I have and fits well, supposed to be 98dB....u followed me through Lewes Tunnel, so you can decide how accurate that is !!!!!

Hayward & Scott has various tailpipe options, so you can probably 'tune' the levels to what you want. And knowing them could probably do that with them if fitted there.

All work out about £550 - £700 from turbo to tailpipe.

The downside is none will accept a standard cat pipe to be fitted for MOT.

I've been talking to LongLife Exhausts over in Ashford and they reckon you would need to weld in 2 cats in parrallel in a 3" bore system to be sure a 350-400BHP car would get through an MOT and not have performance stangled by a cat.
Ok, the MOT is something I hadn't considered with a 3", so not sure what one does at that point with a 3"??,whereas I guess with a 2.5" you can simply change the pipe over come MOT time. So 2.5 full decat may be worth looking into to, but I remember you saying there is quite a flow difference. I guess what I want is to 'free up' the engine so it spools quicker and generally doesn't feel as strangled.
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