I tried searching here and GTT, but didn't find straight and simple answer. I need to install my HKS actuator, but don't have the instructions. I found this, it's helpful but doesn't actually tell everything. https://home.comcast.net/~ronald_miranda/hksactuator.pdf The stock actuator has two vacuum lines. The other goes straight to turbo, but the other one. What should I do with that? I have removed the hi/lo boost solenoid restriction so can I just remove the other hose and leave it open, or do I have to bung it? All I have is this, not any other parts: I'm planning to turn the boost around 1 bar. The mods I have done by far are: Fujitsubo exhaust with decat Apexi air filter JAM ecu Blitz BOV Iridium plugs and I'm going to port the OEM mani. Do I have to think any other mods before turning the boost up (FPR, FMIC, fuelpump)? I'll get at least a boost gauge, but would a wide band lambda be necessary also? Is it possible that it will run lean on 1 bar if I don't have any other fueling mods than the JAM ecu? Will the OEM TMIC be sufficient for 1 bar? Othervise the stock internals should be able to last? I have around 148k km on the clock and the engine and turbo seem healthy. The car was totally stock when I got it so propably it hasn't been abused.