Kingy69
New Member
Recently ive had new injectors,Z32,turbo etc fitted.The car is running fine and now need to sort the boost out.
The turbo has come fitted with a dual port actuator,internal waste gate.The problem is anything over around 1.2 bar and it starts to play up.It will run around 1.4 but the gain and duty is far to high to achieve this.
When you put your foot flat it tends when trying to achieve high boost to shoot up then drop then up then drop and it goes on.I think the waste gate is opening to soon and needs greater control.
I dont know alot about these actuators but it is only connected on the top port and ive done some research and it looks like both ports should be used to hold the waste gate closed and to gain better control over boost.
I know one port you can connect to the turbo compressor housing and the other to the boost control but what i would like to know is what is the best way to do this and which way round does it connect.I have a greddy boost control so can control the air bleeding off but read that sometimes you have to invert the control.Eg when you want more boost you tell the control less due to the different air forces within the actuator.
If anyone has done one of these and understands what im going on about then could you please help me out.
P.s i dont have an air leak on the system...i found that out the hard way and have changed gaskets,pipes and pressure tested also turbo was re tested.Problem lies within control of the actuator.
cheers
chris
The turbo has come fitted with a dual port actuator,internal waste gate.The problem is anything over around 1.2 bar and it starts to play up.It will run around 1.4 but the gain and duty is far to high to achieve this.
When you put your foot flat it tends when trying to achieve high boost to shoot up then drop then up then drop and it goes on.I think the waste gate is opening to soon and needs greater control.
I dont know alot about these actuators but it is only connected on the top port and ive done some research and it looks like both ports should be used to hold the waste gate closed and to gain better control over boost.
I know one port you can connect to the turbo compressor housing and the other to the boost control but what i would like to know is what is the best way to do this and which way round does it connect.I have a greddy boost control so can control the air bleeding off but read that sometimes you have to invert the control.Eg when you want more boost you tell the control less due to the different air forces within the actuator.
If anyone has done one of these and understands what im going on about then could you please help me out.
P.s i dont have an air leak on the system...i found that out the hard way and have changed gaskets,pipes and pressure tested also turbo was re tested.Problem lies within control of the actuator.
cheers
chris