Moderators: IMOC Moderators, IMOC Committee Members
a superchips speed de'limiter a super chips FCD and I am in the process of plumbing in a Ebay Berk intercooler copy (missing the bottom pipes 
)- if the turbo continues to build boost pressure above the set/desired level at high revs, usually until you hit fuel cut, then yes, you have, if not then it may be that the spring in your MBC is too strong, regardless of where the adjuster knob is ( I've had this problem when using ball and spring controllers, which is why I prefer bleed valves, no moving parts, fit-set-forget)- a pointless "band aid" to "cure" boost creep which is often brought on by a free flowing exhaust. why bother fitting a less restrictive exhaust, then deliberately fit a restriction to it unless all you want is a little bit of noise and a shiny tailpipe then fit aftermarket parts to improve performance 
'00 Honda CBR600 Follow me on Instagram @c35rob
We used to do stuff like this in the old days to sort out some problems we used to get in videos 
bodge it and scarper! worked tho.. id try the restrictor and see what it does .try it with no boost controller. proper boost creep goes up and up . like 25 psi. what have you got to lose. 20 quid an see what effect it has . it maybe a sticking plaster but controlling boost can get complicated when you start changing things