suprattgaz Posted July 17, 2005 Share Posted July 17, 2005 I have a first cat replacement pipe for my supra. I have a restrictor ring for it but the guy before me didn't use it. Do I need to? I have a boost controller on there so that should stop the over boosting? I have no idea whether to put it on or not, PLEASE HELP!!!!! Also will it pass MOT with no cats (for emissions)? Gary Link to comment Share on other sites More sharing options...
SUPRALOOPY Posted July 17, 2005 Share Posted July 17, 2005 fit it and maybe if your lucky it'll pass Link to comment Share on other sites More sharing options...
SimonB Posted July 17, 2005 Share Posted July 17, 2005 A boost controller will not lower boost, only raise it. If you have no cats you will almost certainly need a restrictor, if you still have one in you will probably not. The only way to know is to see what boost you run. Link to comment Share on other sites More sharing options...
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