Lau Posted September 22, 2015 Share Posted September 22, 2015 Someone has this ? Happy with it ? Any particular tip on where to buy it ? Different brands ? Thanks! Link to comment Share on other sites More sharing options...
V8KILR Posted September 23, 2015 Share Posted September 23, 2015 Yes, they do work. I had one in my car for a while but sold it with my old setup. You usually get around 400rpm quicker spool from them. Sound Performance in the USA make a reliable QSV. Only one other company makes them and they are dearer and more suited to diesels. Link to comment Share on other sites More sharing options...
Lee P Posted September 23, 2015 Share Posted September 23, 2015 I wouldn't use them, we have only ever used 2 and they both failed. Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 23, 2015 Share Posted September 23, 2015 The few I have seen have failed due to unsuitable material for the heat involved. What did Toyota make the exhaust gas bypass valve of, on the 2JZ-GTE? Mild steel? No... Stainless steel? No.... CERAMIC! Expensive, but a material that will not jam or seize due to deformation, melting or large amounts of expansion. Link to comment Share on other sites More sharing options...
V8KILR Posted September 23, 2015 Share Posted September 23, 2015 I used stainless steel for the one I had built and I ran it for a year with no problems. Looked just the same as the day I built it after a year of drag racing. If you use the right stainless steels like I did, they are fine. Sound Performance have very few failures these days as they only sell their heavy duty version now. Link to comment Share on other sites More sharing options...
mellonman Posted September 23, 2015 Share Posted September 23, 2015 I gained around maybe over 400rpm on changing from a 3" to 3.5"down mid pipe and better flow manifold . I really thought a quick spool would add at least 1000rpm well happy with my results then Link to comment Share on other sites More sharing options...
Wez Posted September 24, 2015 Share Posted September 24, 2015 Something else to go wrong and I certainly wouldn't bother, choose a more suitable turbo setup where such a fudge isn't needed. Link to comment Share on other sites More sharing options...
Lau Posted September 24, 2015 Author Share Posted September 24, 2015 Thanks for your answers guy's! My mechanics told me he already can do a lot just with the mapping of the car (AEM infinity ECU)...? Link to comment Share on other sites More sharing options...
msupra1 Posted September 25, 2015 Share Posted September 25, 2015 I gained around maybe over 400rpm on changing from a 3" to 3.5"down mid pipe and better flow manifold . I really thought a quick spool would add at least 1000rpm well happy with my results then That's great to know. My Borg Warner S366 isn't hitting full boost till 4800rpm in 2nd, and 4400rpm in 3rd and every gear after. I'm on a 3" downpipe and midpipe. I'm doing a full 4" soon, which will leads to my hks 4" exhaust. Link to comment Share on other sites More sharing options...
mellonman Posted September 25, 2015 Share Posted September 25, 2015 That's great to know. My Borg Warner S366 isn't hitting full boost till 4800rpm in 2nd, and 4400rpm in 3rd and every gear after. I'm on a 3" downpipe and midpipe. I'm doing a full 4" soon, which will leads to my hks 4" exhaust. This is what made me go bigger http://www.mkiv.co.uk/vbb/showthread.php?278633-3-quot-vs-3-5-quot-exhaust-confirmed-results&highlight=exhaust its a good read and shows read spool gains Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now