open neck, closed neck exhausts???

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10 February 2009, 10:11 PM

mje_wrx

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open neck, closed neck exhausts???

whats diff, some are open at top where it joins turbo, others have a blanking plate then pipe.??

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10 February 2009, 10:15 PM

joz8968

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Exactly the same question was asked the other day, as it happens:-

https://www.scoobynet.com/general-te...0-exhaust.html

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10 February 2009, 10:15 PM

Peanuts

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you've answered your own question

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10 February 2009, 10:19 PM

joz8968

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Ha ha, yes he has... However, I'm sure he means what's better and why, etc (see above posted thread)...

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10 February 2009, 10:24 PM

mje_wrx

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i mean performance wise.

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10 February 2009, 10:34 PM

joz8968

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Well, I'm not sure if anyone has done a test comparison, but, logically, the bellmouth should easily be better for performance IMHO (i.e. bhp, torque, responsiveness), because the WG gases don't have to turn through two very restrictive 90deg turns, before joining the exhaust gas stream. To what extent though - who knows?