tomgeer Posted December 29, 2007 Share Posted December 29, 2007 I have been reading up on boost limits and it seems the maximum level is 1.2 bar. You have to excuse my ignorance as I am new to supra's and turbos. My car is supposed to have the boost turned up to 1.2 bar but I have noticed it is over-boosting at 1.4 on the gauge when the second turbo cuts in. Correct me if I'm wrong but this is due to the weather because of the dense cold air it performs better. I was told when I bought the car that I should probably fit a restrictor ring (what is that?) on to make sure that it doesn't over boost. Can anyone explain where to get one from (1.2bar) and how to fit them? My car is a 96 twin turbo auto if it helps! thanks guys Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted December 29, 2007 Share Posted December 29, 2007 Envy or Whiffbitz or CW supply restrictor rings which are essentially like an exhaust gasket, but with a small hole in them to limit the airflow and subsequently the boost. they fit between the first and second decat Quote Link to comment Share on other sites More sharing options...
tomgeer Posted December 29, 2007 Author Share Posted December 29, 2007 Bl**dy hell that was quick cheers Rob Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted December 29, 2007 Share Posted December 29, 2007 Lol, no probs Quote Link to comment Share on other sites More sharing options...
Gaz6002 Posted December 29, 2007 Share Posted December 29, 2007 I'd also be careful going to 1.4 bar at all until you get the RR fitted mate, you don't want things going pop. 1.2 bar is about the max you want to push her. Quote Link to comment Share on other sites More sharing options...
Homer Posted December 29, 2007 Share Posted December 29, 2007 As Gaz has pointed out you really do not want to be going about 1.2bar on a jspec, the fuel supply during 2nd turbo spool is very border line at even 1.2bar. Above this it'll almost certainly be running lean with the stock ECU. At >4800rpm WOT it *might* be okay, but I wouldn't want to risk it. Quote Link to comment Share on other sites More sharing options...
tomgeer Posted December 29, 2007 Author Share Posted December 29, 2007 okay thanks guys I'm off to order a restrictor! lol Quote Link to comment Share on other sites More sharing options...
Nic Posted December 29, 2007 Share Posted December 29, 2007 My car is supposed to have the boost turned up to 1.2 bar but I have noticed it is over-boosting at 1.4 on the gauge when the second turbo cuts in. When you say the boost is 'turned up', do you have a boost controller fitted? Quote Link to comment Share on other sites More sharing options...
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