INSTALLATION: Remove the wastegate from its carton and inspect for any obvious physical damage. All
wastegates are thoroughly inspected prior to shipment from the factory. If any shipping damage is evident,
contact your supplier and request that they process a claim with the shipper involved.
1. The Evolution Wastegate may be located anywhere between the engine exhaust and the turbine inlet of the
turbocharger (refer to Figure 1), preferably near the header collector, just before the turbine housing. The
wastegate may be mounted in any orientation that is convenient, either directly on a cast exhaust manifold
(with integral mounting flange), or on a flange that has been welded to a fabricated manifold. In the case of a
welded flange, a minimum flange thickness of 3/8” is recommended to minimize flange warpage. When
choosing the location of the wastegate, careful consideration should be taken to insure that the actuator
section (top half of wastegate) is NOT exposed to extreme heat. If selected location places the actuator
section close to a severe heat source, the use of a heat shield is recommended.
2. Once a suitable mounting location has been selected, determine the routing of the wastegate exhaust. It may
exit either away to the side or rear of the vehicle via a dedicated line, or reconnect to the vehicle exhaust
system after the turbine housing. NOTE: Federal and state laws require that all vehicle exhaust must exit
away from the passenger compartment. The exhaust must be connected to the vehicle exhaust system or
routed to the outside of the vehicle away from passenger compartment. The Evolution Wastegate has
designed to be used with 1-1/2” (14-16gauge) tubing, for both inlet and discharge. Be sure to avoid routing
any exhaust piping near any fuel or brake lines, or any other heat sensitive components.
3. The Evolution Wastegate features the same flange-mount inlet and discharge connections as the Deltagate
wastegate (refer to Figure 2). A discharge gasket is supplied with the wastegate kit, and no inlet gasket is
required, as the floating valve seat acts as the inlet seal. Be sure all mating surfaces are flat and free of
irregularities. Once all mounting and discharge routing provisions have been determined and fabricated,
install and secure the wastegate with 5/16” diameter fasteners (grade 5 or better recommended) and
mechanical locknuts (conventional split lockwashers loose their holding power when exposed to high temps).
NOTE: A variety of mating flanges, fittings and other accessories are available from your nearest Turbonetics
distributor (see common accessories list on last page).
4. Refer to the sensing line schematic shown in Figure 1. A minimum sensing line size of 1/8” ID is
recommended for proper response. The wastegate actuator ports are 1/8” NPT pipe thread. Use sealant
tape or liquid on all fitting threads. Sensing line material should be suitable for automotive under-hood
environment, and compatible with gasoline vapor. Care should be taken in routing sensing lines to avoid
damage from any sharp edges or excessive temperatures.
Stand-alone Installation: If Evolution Wastegate is to be installed as a conventional wastegate, the
boost sensing line (bottom actuator port) may be connected to any convenient manifold pressure source,
such as compressor discharge or intake manifold plenum (plenum runner locations not recommended, as
they may cause pulsing which may affect control stability). The top actuator port may be fitted with a filter
fitting or connected to the air intake system after the filter. CAUTION: Do not plug the hole, the top
actuator section needs to “breath” during operation.
Variable boost control installation: If Evolution Wastegate is to be used in conjunction with a variable
boost control device, follow the manufacturer’s instructions relative to connections and routing. As in the
conventional wastegate installation, it is strongly recommended that the boost sensing line be connected
directly to the pressure signal source (do NOT tee into this line for other functions).
5. The Evolution Wastegate has been factory calibrated to control boost within plus or minus 1psi of the
installed spring rating. A choice of actuator springs is included in the kit, to suit a variety of application
requirements. Using a suitable manifold pressure (boost) gauge, road test the vehicle to ascertain proper
operation. If boost levels exceed specified limits during road testing, recheck all sensing line connections for
proper location and leaks. Re-test to verify. CAUTION: If detonation occurs, discontinue testing until source
of detonation has been located and resolved. DO NOT operate vehicle in detonation, as severe engine
damage may result. Any damage incurred as a result of improper installation or usage is a customer
responsibility.
