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Subject Re: 1993 TT - UPDATE for some advice on RE-INSTALL of NEW...
     
Posted by LA z on July 30, 2019 at 10:30 AM
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In Reply To 1993 TT - Idle and Turbo Boost issues after Cheap injector posted by LA z on July 22, 2019 at 06:41 PM
     
Message NISMO injectors. Over the last weekend we upgraded to NISMO 740cc injectors with all new seals from Specialty Z. Gasket to plenum and to Idle Control Valve is Nissan OEM.

We still have a slight hesitation at cold idle at 800 rpm. Once it revs beyond idle, no hesitation, no boost issue. When warm to Operating Temp, hesitation goes away. Vacuum leak in one of the hoses? Thinking the brake or clutch booster hose. When stepping on the brakes, the idle changes (when warm, not when cold) The other could be a the Cold Idle Valve???

Any suggestions where to look? No codes.... that's why I think a slight vacuum leak?

     
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