An upgraded diverter valve (blow-off valve) for the Toyota GR Yaris Gen 1 — the Turbosmart Kompact EM PlumBack is a direct plug-and-play replacement for the OEM valve, delivering faster boost response, improved turbo spool, and greater reliability under repeated hard use.
The OEM diverter valve on the G16E-GTS is a known weak point under sustained boost, particularly after an ECU map. This is the most popular direct upgrade — it fits without cutting or fabrication, uses the original wiring connector, and is ready to use straight from the box.
Key features
Direct OEM plug-and-play replacement — no cutting or fabrication
Plumb-back (recirculating) design — emissions legal for road use
Faster boost response and improved throttle feel
Compatible with standard and mapped G16E-GTS engines
Turbosmart billet aluminium construction
Retains OEM wiring connector (EM = Electronic Match)
Fitment
Make: Toyota
Model: GR Yaris
Generation: Gen 1
Engine: G16E-GTS 1.6T
Year range: 2020–2024
Variants: All
What's included
1x Turbosmart Kompact EM PlumBack diverter valve
Fitting hardware and instructions
Installation
Difficulty: DIY friendly. Plug-and-play replacement — no specialist tools required. Approximately 30 minutes.
