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EVOMS Performance Diverter Valve Upgrade

A performance A valve that vents excess turbo boost pressure during gear changes or lifting off the throttle, protecting the turbo from pressure spikes. upgrade for the Porsche 718 Cayman and Boxster, from Flat 6 Motorsports by Evolution Motorsports, a Porsche tuning company that partnered with Flat 6 Motorsports to design this diverter valve., replacing the factory plastic valve that's prone to leaking boost on tuned and even stock cars. It uses a 6061-T6 aircraft-grade aluminum housing with an engineered spring rate built for higher boost applications, holding consistent boost pressure for quicker turbo spool-up and smoother, faster shifts from the PDK. It's been tested on a 450+ hp 718 Cayman GTS. Installation is fully bolt-on and takes a couple of hours. Includes one diverter valve. Fits 2017-present Porsche Cayman/S/GTS and Boxster/S/GTS models (2.0/2.5L).
Frequently asked
Which cars does the EVOMS Performance Diverter Valve Upgrade fit?
Fits your 718 Cayman. Fabspeed lists this piece for: 2017 - Present Porsche Cayman / S / GTS (2.0 / 2.5L); 2017 - Present Porsche Boxster / S / GTS (2.0 / 2.5L). Exact fitment for your year, trim and options is confirmed on your free consult before anything is ordered.
What does the price include?
The delivered price includes the part from Fabspeed USA, freight to Australia, import costs and GST. Enter your postcode to refine delivery; the final figure is confirmed on consult.
How long until it arrives?
Every Fabspeed part is made in-house at Fabspeed USA with about a one-week production lead time, then allow another 3-4 days for delivery to Australia via UPS. That freight is already included in the price.
How many valves are included?
One diverter valve.
How long does installation take?
About a couple of hours, fully bolt-on.
Is this only for tuned cars?
No, Fabspeed says it benefits tuned and even stock 718s, since the factory plastic valve is prone to leaking boost either way.
Who installs it?
Rennen Motorsport in Adelaide, or an authorised dealer near you. Fitting it yourself may also be an option depending on the part, so raise it on your consult; professional installation is quoted separately.
Is it covered by warranty?
Fabspeed products carry the manufacturer's warranty, supported locally through Rennen Plus as the Australian principal. See our returns policy.
Can I just buy this outright, or do I need to talk to someone first?
Every enquiry, whether it's one part or a full build, starts with a free consult. We confirm the exact spec for your car before anything is quoted or ordered.













