Noz Posted September 13, 2012 Share Posted September 13, 2012 I can't find a 4" exhaust control valve. apexi make 3" ones, I currently have 3" down and mid pipe but upgrading to 4" so have to assume the mid and down pipe will be next to go. a friend suggested using a 4" throtte body. is this idea a stupid one, as i can't find any solutions im considering anything at the moment. i would probably have to cut the 4" mid pipe to install it. Quote Link to comment Share on other sites More sharing options...
Guest Bailey Posted September 13, 2012 Share Posted September 13, 2012 I can't find a 4" exhaust control valve. apexi make 3" ones, I currently have 3" down and mid pipe but upgrading to 4" so have to assume the mid and down pipe will be next to go. a friend suggested using a 4" throtte body. is this idea a stupid one, as i can't find any solutions im considering anything at the moment. i would probably have to cut the 4" mid pipe to install it. hello mate, DW do one http://www.driftworks.com/shop/qtp-electronic-exhaust-cutout-bypass-valve-and-y-pipe.html if that helps? Quote Link to comment Share on other sites More sharing options...
Noz Posted September 13, 2012 Author Share Posted September 13, 2012 That looks awesome mate. It looks like a switch though, would that be adjusable to reduce noise rather than to completely shut the valve? Quote Link to comment Share on other sites More sharing options...
michel lane Posted September 13, 2012 Share Posted September 13, 2012 I have a brand new 4 inch electronic exhaust valve unit , it comes attached to a flange but needs to be welded to any 4 inch exhaust . The valve works electronically with a switch , on off. The value and the control mechanism comes with the kit, but the switches you will need to source as it does not come with the kit. £150 inc delivery. Quote Link to comment Share on other sites More sharing options...
Nic Posted September 13, 2012 Share Posted September 13, 2012 (edited) Apexi do this 4" ECV designed to be welded into the exhaust. http://img825.imageshack.us/img825/3778/picture1qt.jpghttp://s6.images.drive2.ru/community.blog.photos/x3/4400/000/000/112/de2/88cd5b5dee1c10eb-large.jpg Edited September 13, 2012 by Nic (see edit history) Quote Link to comment Share on other sites More sharing options...
Noz Posted September 13, 2012 Author Share Posted September 13, 2012 So running this on a system, would the flow not be reduced too much when fully closed michel? - - - Updated - - - Nic, I can't find anywhere online where I can purchase this item? Quote Link to comment Share on other sites More sharing options...
Nic Posted September 13, 2012 Share Posted September 13, 2012 Nic, I can't find anywhere online where I can purchase this item? Do a google search for the part number 'Apexi 155-A021' Quote Link to comment Share on other sites More sharing options...
michel lane Posted September 13, 2012 Share Posted September 13, 2012 you would put a switch that will allow you to open or close the valve at certain angles . Its simular to Nic suggestion but its electronic. I had used the unit that Nic recommended before , it lasted 4 weeks then the internal flap bent due to the amount of flow through the exhaust . Then it because a restriction, on top of this it started leaking where the pivoit is on the open \closing mechanism . To put it bluntly it was a poor design, maybe for NA cars its fine but for turbo cars it was a waste of time . Quote Link to comment Share on other sites More sharing options...
Noz Posted September 13, 2012 Author Share Posted September 13, 2012 Mines NA-T so I need to consider the best mechanically strong option. Or look into upgrading the valve. I was considering gettin a 3" valve and uprating the butterfly mechanical components. - - - Updated - - - Thanks nic! Quote Link to comment Share on other sites More sharing options...
V8KILR Posted September 14, 2012 Share Posted September 14, 2012 (edited) I keep thinking about doing this as well but I think its best to have a quiet muffler setup (as I have at the moment) and use one of these as an exhaust bypass that opens into a dump pipe or bypasses the muffler instead. That way its not under any high pressure so won't break easily. Edited September 14, 2012 by V8KILR (see edit history) Quote Link to comment Share on other sites More sharing options...
Noz Posted September 14, 2012 Author Share Posted September 14, 2012 Will probably get a custom 4" mid pipe made up and weld it into that. Probably put up with the heat better than materials supplied with a TB. I'll most probably need it having looks at the 4" twin system noise levels. Quote Link to comment Share on other sites More sharing options...
Noz Posted March 11, 2013 Author Share Posted March 11, 2013 Has anyone got one of these, I'm going to need one shortly and am wondering if its a waste of money. Quote Link to comment Share on other sites More sharing options...
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