markybhoy86 Posted February 18, 2009 Share Posted February 18, 2009 Thor prefered. pm me going BPU, what size does the restrictor ring have to be, j-spec, can't find anything on it?? Link to comment Share on other sites More sharing options...
movistar Posted February 18, 2009 Share Posted February 18, 2009 most go 1.0bar ring and get a boost controller to take it to 1.2bar...or you can go 1.2 ring and hope you don't get any boost creep over the winter month's...most of the traders here have em. Use the search bud and get reading, loads of info on it...good luck :-) Link to comment Share on other sites More sharing options...
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