mellonman Posted January 10, 2009 Share Posted January 10, 2009 hi with this cold weather iv had this happen a few times now and can not think what it could be the problem as i drive up the road if i put my foot down i get boost 1.3 and over at 3000rpm the turbos have a higher pitch whisle. when 2nd turbo kicks in it went up to 1.6 when i noticed this only happens when engine is still cold and choke is still on or part on its good that my turbos spool up so well but over 1.2 on jspec is not good at all. i have a apexi avcr,full decat,and a 1.1 restictor ring the boost control is set to 1.1 but well cant control the boost when this happens. its not a issue at the mo as i just let it warm up more and it acts normal just thought if anyone could shed some light. Link to comment Share on other sites More sharing options...
Supra-Brett Posted January 10, 2009 Share Posted January 10, 2009 hi with this cold weather iv had this happen a few times now and can not think what it could be the problem as i drive up the road if i put my foot down i get boost 1.3 and over at 3000rpm the turbos have a higher pitch whisle. when 2nd turbo kicks in it went up to 1.6 when i noticed this only happens when engine is still cold and choke is still on or part on its good that my turbos spool up so well but over 1.2 on jspec is not good at all. i have a apexi avcr,full decat,and a 1.1 restictor ring the boost control is set to 1.1 but well cant control the boost when this happens. its not a issue at the mo as i just let it warm up more and it acts normal just thought if anyone could shed some light. Not sure on the cause, but you shouldnt be booting it when the engine is cold. Link to comment Share on other sites More sharing options...
monsween Posted January 10, 2009 Share Posted January 10, 2009 Its the cold air me thinks. I asked the same question a few weeks ago. They frequently overboost when the airs cold. Link to comment Share on other sites More sharing options...
mellonman Posted January 10, 2009 Author Share Posted January 10, 2009 its not even booting it i mean it happens even at 1/2 too 2/3 of the throttle very strange:search: Link to comment Share on other sites More sharing options...
Jake Posted January 10, 2009 Share Posted January 10, 2009 happens when engine is still cold and choke is still on or part on Does your car have a choke? How do you know when its on? Link to comment Share on other sites More sharing options...
mellonman Posted January 10, 2009 Author Share Posted January 10, 2009 i guess its a automatic choke or something along them lines anyway you can tell that when you start it it will idle at around 1500rpm and when it comes off normal idle about 600rpm Link to comment Share on other sites More sharing options...
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