Rory Fraser |
01-13-18 08:01 PM |
Stock s4 turbo 2 wont boost past 5 psi
hey guys so i installed my 3" downpipe, boost and afr gauge today as well as my fuel cut defender. car runs great afrs are fine a bit on the rich side but my main problem is when i hit full boost around 4500 rpm im only getting 5psi i checked my gauge with a compressor and it has been t'd to the map sensor vac line that connects to the intake manifold so its accurate and at idle (700rpm) im pulling -10 vacuum and when cruising around the normal 2500-3000rpm range im pulling -8 vaccume any ideas for why im not even hitting stock boost levels thanks!
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