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Install the boost leak tester onto the turbo chargers inlet and secure with the T-bolt clamps.Remove the intake hose/pipe off your turbo chargers inlet.Simple Steps to Use the Boost Leak Tester: This conditions then allows for the turbos wheel tips to make physical contact with the turbo housing. What happens to the turbo charger if there is a boost leak?Īny leak will cause the turbos wheels to over-spin and result in bearing to wear out eventually causing shaft play! This happens faster with larger leaks. Typically the boost target will be lower than what is expected by the tune.P-codes, Check engine lights, system too rich.How do I know if I have a Boost Leak? Common Symptoms are: divertor valve leaks from diaphragm or boost lines.Faulty charge air coolers (leaking through various cracks).Lifetime warranty on gauge, end cap, silicon and fitting. (2) Stainless Steel T-Bolt Clamps with Teflon lock-nut.
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Universal Tire Schrader Valve or 1/4" NPT Milton Type Compressor fitting - choose option.30 PSI range will give you the appropriate reading when testing your charge pipes for low, medium or high boost levels.Durable Plastic End Cap with 1/8" NPT threaded gauge port & fitting port.Keeping the crank system sealed by keeping the oil cap on will pressurize the crankcase and not recommended in these vehicles.Ĭheck out the write-up on an STI (very similar to Legacy GT) here: Avoids removing the intake to access the turbo as it sits underneath the manifold and is difficult to access. It is always recommended to remove the oil cap during testing as the object of the test is to check the charge pipes for leaks and assure the turbo will run healthy by not over-spinning to compensate for a boost leak. Boost leak test at the turbo intake pipe that is right after the maf housing and save yourself time and hassle from getting to the turbo inlet flange.