![]() ![]() So I know this is kind of a coding/programming topic also but it's primarily a mechanical adjustment aided by using the ISTA+ diagnostic tool. Now, use a 10mm spanner to turn nut-A two complete turns in a As the engine builds pressure the vacuum line connected from the turbo compressor housing to the wastegate actuator overcomes the spring and opens the valve, releasing backpressure and controlling boost. (Going by memory here, but the instructions were something like that). (Edited) Connect the pump to the line at the TCV and put pressure on it. ![]() There is plenty of travel to accommodate this, and the flow/pressure ratings of the turbo are significantly higher than the 20 psi rated for the Cummins engine. Use DiagnosticLink to activate the turbo control wastegate in the I/O tab. 5V with the car turned off (Pls correct me if There is a 'base boost' adjustment for the wastegate. Box 425 46341-0425 Phone (219) 996-7832 Fax (219) 996-7749 Web: The purpose of the wastegate is to maintain a particular boost pressure at the intake manifold by regulating the speed at which the turbo spins. Well, technically its a wastegate actuator (WGA) adjustment (for erik) Following the document in the VRD and using the IPD turbocharger tool: You have to be careful to get the right pressure at the time of adjustment as the pressure slowly (over 10 minutes) creeps up from the correct 30 kPa (for my B5423T3 turbo -see chart for your 35. If you are over boosting make the arm longer. If you have a low boost other than a boost leak, you might wana try this. As such any losses to turbine stage efficiency in these conditions can outweigh gains when the wastegate is open. It's very accessible and looks very easy to replace. MattyV said: Firstly this adjustment compensates for the thermal degradation of the shut off spring over time on the turbo wastegate. ![]() This video was created because we get so many inquiries from our custo. External Wastegates are responsible for turbo flutter. adjustment nut (nut A) clockwise to hold the wastegate flap shut. Fit the arm over the flap again, put the c clip on and tighten down the lock nut. the paint mark was still intact on the rod. Turbo wastegate adjustment Turbo wastegate adjustment The reason for checking and adjusting the wastegate is that over time, the spring which keeps the wastegate flap closed gets weak. ![]()
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