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Electronically-controlled exhaust butterfly valve

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Old 12 June 2010 | 09:00 PM
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Default Electronically-controlled exhaust butterfly valve

anyone got one?

whaere can i buy one in the uk

thanks
ian
Old 13 June 2010 | 01:09 AM
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A what?
Old 13 June 2010 | 02:34 AM
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Try ralph at milsport, he put one on his ra
Old 13 June 2010 | 09:43 AM
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hyerflow are selling them, check trader section
Old 13 June 2010 | 11:18 AM
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what s 1 of these
Old 13 June 2010 | 11:26 AM
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Often called exhaust cut-outs... plenty on google/ebay
Old 13 June 2010 | 11:27 AM
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Scrap yard; chop one off a latish model high end BMW (530, 330 etc e46 onwards), or sporty VW/Audi (R32, TT 3.2 etc), then weld it into your exhaust.

Grab a vacuum solonoid while you're there (most cars have them for the charcoal cannister) so it can plumbed in and be used to switch to control the valve*.

*note: plumbed in this way will allow the flap to open when on boost regardless of setting, to have it closed whilst on boost will require a change-over solonoid and a non return valve (change over solonoid is liek the one used on classic Imprezas to the MAP sensor, none return valves can usually be found on most cars on the vacuum hose going to the brake booster).

Last edited by ALi-B; 13 June 2010 at 11:37 AM.
Old 13 June 2010 | 08:42 PM
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so what this do then?
Old 13 June 2010 | 08:45 PM
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if you got a loud exhaust and want a quiter one every now and then so not to wake next door etc

then this will help
Old 13 June 2010 | 09:40 PM
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they seem really expensive.. and wouldnt they extend the exhaust? by like 10mm or however big they are
Old 13 June 2010 | 09:43 PM
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i really like my exhaust i have got on my car at the mo. full titanium, the centre section and back box only weigh just over 4kg!!, but it is just abit on the loud side for me
Old 13 June 2010 | 10:56 PM
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I have one on my sti ra, it does strangle it a bit but it's ok for early starts/ late arrivals home etc. My car used to belong to Ralph at milsport so he would be able to point you in the right direction or maybe even supply one?
Old 13 June 2010 | 11:04 PM
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any more info would be good as i'm in the same position as the one with a titanium exhaust system and not being able to do trackdays..

i just tend to stick with those with no noise limits howeevr it would be nice to have it variable..
Old 13 June 2010 | 11:51 PM
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I have seen a full system with sport cat specifically for trackday noise regs at tracktive solutions. Not cheap at £795 but would solve the problem maybe?
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