Electronic StraightGate76 eSG76 External Wastegate
$1,772.22USD (Excl. Sales Tax)
The StraightGate76 from Turbosmart is the world’s highest flowing external wastegate! The StraightGate76 is a zero-offset butterfly style wastegate which allows enormous flow and almost linear control with unparalleled boost control throughout the entire operating range.
Turbosmart’s eSG76 Electronic StraightGate is a Patent Pending and based on the success of the Multiple Award Winning, World First eSG50 Electronically Actuated Butterfly Style External Wastegate. No reference hoses, no springs and no diaphragms means full electronic control via a servo motor and Turbosmart’s zero-backdrive gearbox which results in lower current demands as well as operation stability against huge drive pressures. The eSG76 includes onboard sensors covering actuator temperature as well as valve position in both analog and digital. The Electronic actuation results in the widest possible tuning window from zero boost (if manifold priority allows for it) to all available boost.
The Turbosmart StraightGate76 has been designed from the ground up & validated in-house to create a new level of control and flow, never seen in any wastegate before it. The zero-offset butterfly valve is subjected to exhaust drive pressure equally on both halves of the valve which pivots centrally, resulting in a valve that is self-balanced against any drive pressure. This self-balancing means less work is required to actuate against even the highest of drive pressures and a wider tuning window is possible, no matter how the valve is actuated. The increased flow is achieved through the efficiency of a straight through valve versus a traditional poppet style valve where the exhaust gas must be turned 90 degrees by the valve.
76mm (2.99in) Butterfly Style Zero-Offset Valve
723.7 CFM / 20.49m3 per minute flow
Stainless Steel (630) Butterfly and shaft
Stainless Steel (347) Main Body
Stainless Steel (Heat Treated 431) V-Band Clamps
360 Degree Mounting options on V-Band
Clock-able Actuator Position (3 x 120 Deg Options)
Full Electronic Actuation (Dual H-Bridge Input)
Onboard (0-5v) Analog Actuator Temperature Sensor
Onboard (0-5v) Analog Valve Position Sensor
Onboard (PWM) Digital Valve Position Sensor
7 Wire Unterminated Flying Lead Loom
Liquid Cooling for Actuator Stability
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.
Electronic StraightGate Unit
Un-Terminated Flying Lead
StraightGate Inlet and Outlet V-Bands
StraightGate Inlet and Outlet Weld Flanges
Ensure you have an over-boost cut-out. This is a safety feature built into basically all factory, aftermarket & programmable ECU’s. You can never be too careful. Make sure it is set at a sensible & reasonable limit. Increasing the boost will put more load on your engine and there are other tune related factors you must consider. If in any doubt, speak with a professional tuner / calibrator.
What is a StraightGate?
The Turbosmart StraightGate is an external wastegate which uses a zero-offset butterfly style valve to control boost. Unlike traditional poppet style wastegates which need to turn the exhaust gas around through 90 degrees, the StraightGate does not & as such is far more efficient. StraightGate’s for a given valve size, will flow considerably more than a poppet style gate because of this improvement in efficiency.
What is an electronic wastegate?
Turbosmart electronic wastegates are 100% electronically actuated by way of a servo motor and patented zero-backdrive gearbox. There are no boost reference hoses, no springs and no diaphragms in the Turbosmart eGate range which means your boost control strategy is no longer reliant on them. Instead, you have full control under all circumstances, where traditionally you would have a base spring pressure which would limit your boost window from roughly base spring pressure to around 2-3 x base spring pressure. This is not the case with electronic control as you can dial in completely open or closed, independent of any reference signal or spring.
What is Zero-Backdrive?
Zero-Backdrive is the technology contained within the gearbox of the Turbosmart range of eGates. This design feature means when there is no power being applied to the gate, there will be no movement. This has been designed and validated to 100’s of psi to ensure the wastegate won’t move, unless it is commanded to. This was a critical aspect of the eGate range as it meant we could keep overall power consumption down against even the highest drive pressure attempting to force the gate open. And when the power isn’t needed to hold the gate still, it can be used to drive home against it when required. This feature allows poppet style wastegates incredible stability against high drive pressures and equally useful on the StraightGate range where it still benefits stability and control.
How fast are the StraightGate’s?
Fast. Full Valve Actuation can be achieved in 63ms.
What do I need to do to control it?
You will need a programmable ECU (Engine Control Unit) and a ‘High Current’ (20 Amp) output H-Bridge output. This can be done on some ECU’s (speak with your manufacturer) or, via an external H-Bridge module. The Turbosmart BlackBox is available as an external driver which can be controlled via recalibrated / programmable factory ECU’s (Via traditional PWM boost control output) or with a programmable aftermarket ECU via PWM, 0-5v Analogue output or with CAN based override.
Can I rotate the Actuator Housing?
Yes. There are 3 clocking options to choose from. The valve body itself is also rotatable on the V-band axis and is non-directional so you have huge flexibility with fitment.