GFB T9114 Mach 2 TMS Recirculating Valve Kia/Hyundai 1.6T-GDI Smartstream (G4FP)
The latest Smartstream 1.6 T-GDi engines fitted to Hyundais i20 N and other models do not use a MAF sensor which means that you can vent to atmosphere for that blow-off sound, if you like, without causing any driveability issues or Check Engine lights. However, this Mach 2 valve is for those who want all the performance of the GFB TMS valve technology without any of the noise.
That said, Mach 2 gives you the freedom to fit an optional Atmospheric Venting Conversion kit at a later date to give you all the sound so you dont need to buy a new valve.
Product Note: Only for models with Smartstream 1.6T-GDI engine (G4FP), NOT Gamma 1.6T-GDI (G4FJ). You can identify Smartstream models because they will have Smartstream on the engine cover.
The Mach 2 is configured as a 100% recirculating valve (i.e. bypass, plumb back) as a direct factory replacement, for when you want all the performance WITHOUT the noise!
Why replace the factory bypass valve? Better performance! Factory bypass valves typically have two main shortcomings one is that they are often designed to blow open above a certain pressure, and the other is they are not optimised for throttle response.
The Mach 2 solves both issues. With its pressure-balanced design, the Mach 2 can effectively hold unlimited boost (unlimited in that no turbo could ever produce enough pressure to damage it), and the TMS technology ensures maximum throttle response.
