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Old 21 March 2011, 11:22 PM
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RichiePuk
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Default 2.5" Exhaust

Hi all,

After a bit of exhaust help.

Had my 1995 WRX STI for a week or so now and it has a Blitz Nur Spec R exhaust.
While the exhaust is fun the noise level at motorway speeds is not really something I can live with plus I've never been a fan of big Jap cans.

The guys at powerflow have recommended changing to a 2.5" pipe with slightly bigger centre box and I can then have a nice twin exit or smaller 3.5" single exit.

The car has an ihi vf roller bearing turbo and my question is will there be issues running a 2.5 inch pipe rather than the 3 inch I currently have?

It will be going in for a remap as well so I'm not worried about tuning issues.

Any advice welcome.

Cheers
Rich
Old 22 March 2011, 12:05 AM
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The Rig
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From my understanding, upto around 400 ponies is o.k for 2.5",after this figure,the 3" is preffered for better flow etc etc
Old 22 March 2011, 12:50 AM
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jura11
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Hi Rich you will be OK with 2.5" up to 400bhp without problems,but really you will need tweak map/remap if your car has been not mapped..


Jura
Old 22 March 2011, 12:54 AM
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RichiePuk
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Cheers guys!
Old 22 March 2011, 08:12 AM
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paulT25
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I run a Milltek 3" exhaust on my motor, as are all T25s . Very happy with the sound.
See if they are what you like on their site or at Litchfiled Imports.
Of course a re-map !
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