Quote:
Originally Posted by Cummins Driver
Once again, awesome work man!
On your boost elbow, you may or may not have done it, but what you need to do is drill a very small hole on the wastegate actuator side of the elbow.
This allows it to keep the gate shut and makes it adjustable easier. If it doesent have that hole there, it will open the gate pretty soon, and also when you let off the throttle, it will take the gate a few seconds to shut because all the air in the actuator has to flow back through the elbow, which will take a seconds since it is a restriction.
Without that hole there, it will still open the gate at the same PSI, it just will take it longer because the boost has to go through the restriction, which will take it longer. But as soon as it is pressurized for a few seconds and enough air gets into the actuator, it will open all the way up(if the boost PSI of the actuator is reached)
Hope that makes sense, but that may solve the problems you are having as far as that goes.
Looking good!
Eric
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hey thanks man, and thanks for the info on tuning. i've never heard any thing about that before. it makes sense, without that little hole it would all have to go back through the elbow. so depending on the size of hole you drill in the elbow will it change when the wastegate opens? cuz your just making a small boose leak in actuator circuit so it will take more boost to open it.