tommy holly

Hi thinking about fitting a decat i have got the 28mm exhaust mod with a K&N induction kit would like the exhaust to be slightly louder, i know it want pass a MOT when fitted and to fit blox cel fix, is there any other pitfalls i should know about and which is best decat please

loftust

A very similar question was asked a week or two ago at most - scroll down a bit further to see what was said.

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s2konroids

Get a 60mm if you can, this is the s2000 stock exhaust diameter though most likely your only able to get a 63mm which is more than suffice and dont go bigger.

It will most likely fail an MOT, it wont make the exhaust much louder (only a little) and will introduce a rasp more than anything.

Any anti fowler is suffice etc all it does it move it further out from the exhaust stream so the increased flow wont knock it out of the expected threshold by the ECU.

WinFreak

Can get a high flow cat to keep it mot proof but it's all a bit pointless with a standard exhaust..

MSC

Hi Tommy, a decat will make it considerably louder in my experience. You heard my car on saturday: FIPK, 32mm mod & decat.

Mine is a dms which I dont recommend because it split and needed welding. If you get a berk hi flow cat you might pass MOT, Lee has one so hes best to ask about that. HTH

s2konroids

Thats not my experience on a stock exhaust which the OP has.

MSC

Tommy has 28mm, I have 32mm also stock exhaust. My experience is considerably louder than OEM. Its all relative to the individual ears I suppose

s2konroids

Aye i guess so, I've had about 7 difference exhausts in my S2000 ownership.

T1R's were the best sounding when NA but stupid loud.

Toms1989

I suppose it depends on whether its resonated or non resonated which none of you 2 mentioned

tommy holly

Thanks for the advice ordered a berk 63mm

Cheers Tommy