When an EVC is installed, these solenoids are removed from the pathway. The stock wastegate springs, set at 6 psi, are the only things controlling the boost as a fail safe. Vent any vacuum from getting to the wastegate actuators. Stock design has a set of boost cut solenoids in the vacuum pathway to Longer, but vacuum is still a function of the system. The amount of vacuum is restricted slightly, keeping the wastegates closed The amount of vacuum is a function of the entire system. The wastegates are controlled by a pair of actuators that moveĭepending on the amount of vacuum pressure applied to them. Open, they allow an alternate path for air to move through, allowing boost When they areĬlosed, the turbo is the only pathway for air to follow. Wastegates control the amount of boost turbos create. Also larger injectors are needed (555 cc or bigger) If youĮxpect to run more than 12 PSI an upgraded ECU is a must! The remappedĮCU is critical to keep proper air/fuel ratios at higher boost levels the Steady low boost levels) requires and electronic boost control. However, to run higher boost levels (or to run more Boost jets are goodįor about 12.5-15 psi. HP on TTs is getting a Jim Wolf ECU and 'boost jets'. Apex'i Super AVC-R Boost Controller Installation Typically, the first step in increasing boost to gain more
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