Gen4 CompGate40 7psi External Wastegate (Black)
$333.28USD (Excl. Sales Tax)
IT’S BACK. The Gen4 CompGate40 and HyperGate45 have been approved for continuation and re-introduction at an all-new price!
Still a rock-solid performer!
Still, hand assembled and individually tested before shipping!
One change – A price drop!
Turbosmart is proud to announce the product continuation, re-introduction and price drop of their Gen4 CompGate40 and HyperGate45 external wastegates. This re-introduction with reduced pricing will help those of you who need a lower-spec solution but still want that Australian-made, hand-tested quality you get from a manufacturer with over 25 years of experience!
The Gen4 CompGate40 is a 4th Generation external wastegate packed with value, performance and reliability! If you need a 40mm external wastegate and don’t have motorsport in mind, this is the solution for you! Genuine street performer with good flow & heat characteristics, which is suitable for pump fuel and e85 applications.
Gen4 CompGate40 7 psi
Gen4 CompGate40 14psi
Gen4 HyperGate45 7 psi
Gen4 HyperGate45 14psi
V-Band inlet & outlet to suit 40mm peer fitment
Unique locking collar design
Stainless Steel cast body & Aluminium actuator housing
It can be fitted with springs from 3 to 26psi
Solid piece Stainless Steel valve
Proprietary high-temp silicon Nomex diaphragm
Twin 1/16″ NPT reference ports
It is the responsibility of Turbosmart to warn its customers and employees that some products sold on this website contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
This product does not have a CARB EO #; it is not legal for sale or use in CA on pollution controlled motor vehicles. This is intended as a "Race Only" product to be used solely for competition. It's use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization; any other use including recreational off-road use, may be a violation of local, state and federal laws. It is the buyer's responsibility to verify legal use of this product for the intended application and use.
Gen4 external wastegate unit
Pre-fitted with springs as per description
Gen4 stainless steel valve seat
Gen4 V-band clamps
Gen4 inlet & outlet weld flanges
Locking collar tool
1/16″ NPT blanking plugs
1/16″ nipples (5mm)
Gen4 CompGate40 Diaphragm Replacement
Gen4 CompGate40 1/16” NPT Fitting Kit
Gen4 CompGate40 Replacement Cap Black
Gen4 CompGate40 V-Band: Outlet
Gen4 CompGate40 Locking Collar
Gen4 CompGate40 Locking Collar Tool
Gen4 CompGate40 Weld Flange: Inlet
Gen4 CompGate40 Weld Flange: Outlet
Gen4 CompGate40 Spring 3psi Inner – Brown / Black
Gen4 CompGate40 Spring 5psi Inner – Brown/ Grey
Gen4 CompGate40 Spring 7psi Middle – Brown / Purple
Gen4 CompGate40 Spring 11psi Middle – Brown / Red
Gen4 CompGate40 Spring 10psi Outer – Brown / Blue
Gen4 CompGate40 Spring 7psi Outer – Brown/ Pink
1/16” NPT to -3AN Male to Male Adaptor
1/16” NPT to -4AN Male to Male Adaptor
1/16” NPT to 1/8” NPT Male to Female Adaptor
Turbosmart external wastegates are designed around peer flange orientation, meaning: Yes. If you have a 40mm valve, then our 40mm CompGate40 will fit & the same goes for the 45mm HyperGate45.
How do I change the spring(s)?
You will need the locking collar tool as supplied in the box. You also need to observe the instructions and apply pressure to the top cap before removing the collar – This is part of the design and an important anti-vibration measure. And by ‘pressure’, we mean a press, clamp or vice.
The valve seat does not seem to sit flush to fit the clamps – What am I doing wrong?
Your Turbosmart external wastegate is designed to have pre-load, and you will need to push down and apply a small amount of force (the higher the base spring pressure, the higher the force), then get the V-band secured. It is designed this way to ensure maximum seat pressure – Do not use the V-band fasteners to bring the gate seated.
I cannot get control of the boost; what is wrong?
The number 1 issue with boost control is the reference/hookup method. Get back to basics: Try using the simplest hookup method (Boost reference to the lower port of your actuator) and performing a power run. What boost did it make? If your boost is lower than the spring pressure (pre-fitted), then you may have boost leaks in the system that need addressing. If you have more boost than the base spring pressure (pre-fitted), your manifold design may limit wastegate priority. Then go from there… Then go from there… Then go from there…