TurboXS 3-Port Electronic Boost Controller (Evo X) The TurboXS 2008 - 2015 Mitsubishi Evolution X Boost Control Solenoid is designed to replace factory 2 port boost solenoid with a 3 port. This part is required for great boost control on your Evo when using an aftermarket Downpipe or... MSRP: Was: Now: $149.00 Add to Cart