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Electronic Valve Controller Kit
An electronic valve controller kit for the Alfa Romeo Giulia Quadrifoglio and Stelvio Quadrifoglio, giving manual control over the factory vacuum-actuated exhaust bypass valves. Three modes cover normal factory operation, forcing the valves permanently open for full sound, or locking them closed for a quiet car at noise-limited track days. It's plug-and-play, powered through the existing solenoid connector with no wiring modifications, so the install is fully reversible. A fail-safe reverts control to the factory ECU whenever the ignition is off, and there's no check engine light or diagnostic code triggered. Includes one remote transmitter, compatible with HomeLink version 5 and newer, plus a manual switch option for in-cabin control.
Frequently asked
Which cars does the Electronic Valve Controller Kit fit?
Fits your Alfa Romeo Giulia Quadrifoglio (2016+). Fabspeed lists this piece for: Alfa Romeo Giulia Quadrifoglio; Alfa Romeo Stelvio. 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.
Does this trigger a check engine light?
No, Fabspeed states there are no check engine lights or diagnostic trouble codes from this kit.
Can I go back to stock easily?
Yes, installation requires no wiring modifications, so it's 100% reversible, and a fail-safe reverts valve control to the factory ECU whenever the ignition is off.
What are the three modes?
Normal (stock behavior), Always Open (valves forced open for full sound), and Always Closed (valves locked shut for quiet running, useful at noise-limited track days).
Does it work with my key fob?
It includes its own remote transmitter, and is compatible with HomeLink version 5 and newer if your car has that integrated; older HomeLink versions before 2013 aren't supported.
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.
