S280 with Turbosmart 14psi IWG

[Firekoning]

Hey guys,
I have a slight problem with the IWG from turbosmart. I installed the wastegate but when I accelerate the car it doesn’t hold boost to where is “supposed” to, it’s starts to drop and come back again like if the wastegate valve arm is opening and closing. Ex. It’s goes from 24 to 18 or lower and the boost keeps dropping and rising during the whole acceleration. I’ve tried to play with the pre load thinking it was to tight or something along does lines. This did not happened with the stock WG that it came with. Is it a pre load problem that I’m doing wrong or is it a tune problem that needs to be fixed?

 

[dhminer]

Did you take the turbo off to install the wastegate? IWG should crack open, then get forced open further as exhaust pressure builds. It shouldn't open/close/open/close. That sounds to me like either your WGDC is screwy or you have a boost leak somewhere.

 

[Firekoning]

Did you take the turbo off to install the wastegate? IWG should crack open, then get forced open further as exhaust pressure builds. It shouldn't open/close/open/close. That sounds to me like either your WGDC is screwy or you have a boost leak somewhere.

Hmmm. But the thing is that with the stock WG it doesn’t do this. So it cannot be a boost leak. Would it be a tune problem then?

Did you take the turbo off to install the wastegate? IWG should crack open, then get forced open further as exhaust pressure builds. It shouldn't open/close/open/close. That sounds to me like either your WGDC is screwy or you have a boost leak somewhere.

Oh and sorry I did not take the turbo off. I’d just installed it with the turbo on the car since it was already installed couple of months ago.

 

[dhminer]

Hmmm. But the thing is that with the stock WG it doesn’t do this. So it cannot be a boost leak. Would it be a tune problem then?

Oh and sorry I did not take the turbo off. I’d just installed it with the turbo on the car since it was already installed couple of months ago.

Yeah it’s probably the tune then if you didn’t take anything off to swap the wastegate actuator.

 

[Magnetic]

Yeah it’s probably the tune then if you didn’t take anything off to swap the wastegate actuator.

I've heard you have to get an updated tune when changing WGA's.

 

[dhminer]

I've heard you have to get an updated tune when changing WGA's.

Yeah 100% you need a new tune with a different actuator. Especially if it’s a different spring pressure