Two Souls in One Exhaust
Comfort when you want it. Mechanical fury when you open it up.
The Problem Without Valves
Not just noise. It's engineering applied to sound.
Always loud = always problems
How They Work
Electric valves open and close the exhaust gas flow in milliseconds. Closed: the sound is contained, gases follow a longer path — quieter, road legal. Open: free flow, maximum acoustic opening, the true Lettieri sound unfiltered.
The Control
Management via steering wheel switch, dedicated app or external controller — depends on the vehicle. Same car, two completely different characters. No mechanical modification between modes.
Steering Switch
Mobile App
Controller
Three Modes, One System
City Mode
Reduced flow, road legal, happy garage neighbors
Sport Mode
Partial opening, the right compromise
Track Mode
Everything open, Lettieri sound without compromise
Available Products
Electric valves are available on a selection of Lettieri systems — indicated on the product page with the 'Electric Valves' badge.