stwinn Posted May 6, 2003 Share Posted May 6, 2003 Hi Guys, As I've said in a previous post http://www.mkivsupra.net/vbb/showthread.php?s=&threadid=8146 I'm having a boost creep problem. After I put on a 3" downpipe(and no cats) my boost keeps increasing untill the fuel cut (around 1.13bar). It was recomended in this forum that I fit a restrictor to my exaust. My mechanic thinks that putting a restrictor on would defeat the purpose of putting on the downpipe in the first place (which was to get more flow). He suggested fitting a HKS tubular manifold with a external wastegate (very expensive). What do you guys think? Quote Link to comment Share on other sites More sharing options...
Terminator Posted May 6, 2003 Share Posted May 6, 2003 Restrictor @ £15 or very rear tubular manifold @ £huge ripoff price. No contest, most of us run restrictors. I have a 3"pipe and was running 1.4+ without the ring, now a safer 1.15 to 1.2 max. I doubt you could take advantage of a special manifold as the stock turbos are not much good for sustained use above 1.2. But if you have loads of money and are planning huge power, a new manifold will remove the most restrictive part of the exhaust system. Quote Link to comment Share on other sites More sharing options...
Adam W Posted May 6, 2003 Share Posted May 6, 2003 A new manifold wil lalso require new turbo(s) unless you go for a custom jobbie at even more ridiculous prices. On the road you will notice almost no difference between a system limited to 1bar with a restrictor ring, or a system with an external wastegate and the boost set "properly" to 1 bar. A tubular manifold is a lovely thing to have, but TOTALLY unneccessary in this case. Quote Link to comment Share on other sites More sharing options...
stwinn Posted May 6, 2003 Author Share Posted May 6, 2003 Sorry, I made a typo. The fuel cut kicks in at 1.31 bar. If I was to go with the restrictor, where could I get one from (here in the Cayman Islands I might not be able to find one)? Is there a sorce online? Thanks Quote Link to comment Share on other sites More sharing options...
dude Posted May 6, 2003 Share Posted May 6, 2003 You need Chris Wilson , mail him and tell him what youve got and what you need and im sure he will sort you out . John:flame Dev Quote Link to comment Share on other sites More sharing options...
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