Exhaust Bypass Valve Controllers — New!
Smaller size for easier installation. Same function ... same price.
Take Back Control with the Original Model B — now
improved and smaller size — the Model B3 and B3A Three Way Controllers —
for Ferrari, Maserati and others
The Model B3 ... for vehicles that require two connections. Most
Ferrari's — click for details
Model B3A for vehicles requiring a single connection, including Lamborghini,
Audi, Alfa Romeo and others —
click for details
All three modes operational using either a manual switch or the included
- Normal Mode
- Always Open
- Always Closed (not available for Alfa Romeo Giulia QF)
Model B3 and B3A Exhaust Bypass Valve Controller Kit is a complete solution that provides the
means to take back control of the vehicle's exhaust bypass valves.
With a touch of the button on the remote control, you have control of
the exhaust bypass valves. You can manually open
the exhaust bypass valves to have that classic engine sound at all speeds
and engine RPMs. Of course, you can return the operation of the exhaust
valves to the car's ECU which generally results in lower engine noise at
low vehicle speeds and engine RPM. Installation is plug-and-play.
No electrical modifications ...
E1 — $86.50
E2 — $183.00
E3 — $295.00
The New Model E Controller is one controller with three
configurations. Provides two-way or three-way control for your exhaust
bypass valves for several vehicles. The Model C and D controllers for
Aston Martin, Camaro and Corvette motor cars have been discontinued ...
replaced by the Model E1 and E2. The Model E3 controller supports
Ferrari, Maserati, Alfa Romeo, Audi, BMW and VW motor cars with a single
vacuum solenoid valve.
The Model E Controllers are still completely plug-and-play and installation is easily
accomplished by the home DIYer.
Exhaust Systems & Bypass Info
automotive exhaust system is designed to evacuate gases from the combustion
chamber quickly and efficiently. Exhaust gases are not produced in a smooth
stream; exhaust gases originate in pulses. An 8 cylinder engine will
have 8 distinct pulses per complete engine cycle and a 12 cylinder engine
will have 12 pulses. As more pulses are produced, the exhaust flow becomes
Within the exhaust system, there is an inherent resistance the flow of the
exhaust gases back pressure, loosely defined as the resistance to positive
flow of the exhaust system. With any modern engine, the inherent
back pressure within the exhaust system which consists of the exhaust manifold, the
catalytic converter, the system muffler (silencer) and the connecting
pipes. While one would think that lower back pressure would be better, that
is not always the case ...
Other Products & Services
Extra and replacement parts for Exhaust Bypass Controllers are
available. Such as remote control transmitters or RF antennas.
Contact us using the link below should you need replacement parts or