Boost/wastegate problem

[Caliber676]

Hey guys. So i've been having a problem with my car keeping boost for a while and now that the engine is about to come out, i want to start to focus my attention on this. When I drive the car for a period of time and start boosting it feels like the turbos are releasing boost simultaneously, as it also sounds like continuous "farts". I have been told it may be the turbo wastegate actuator diaphragms going or the wastegate solenoid located beside the fusebox. I also changed my Bov's to twin Blitz DD, but it also had this issue with the stock turbo's. Any help would be great?

[mcfly]

the turbos are shuffling? Sort of back and forth? If possible confirm this by watching a boost gauge.

when exactly will it do this? Can you emulate it at any time or only under certain circumstances?

[Caliber676]

Yes it seems as though the turbo's are shuffling rapidly and power is definitely being lost. I only have the stock boost gauge , so any pressure difference is minuet on the gauge. The issue usually occurs when the car is warmed up and pushed under boost a few times. Also if the car is under boost for more than say five seconds in a steady pull, the "shuffle" will occur. Again this occurs after the car has been put under boost a number of times.

[Caliber676]

Any suggestions as to the cause?

[mcfly]

see if advancing the timing helps at all. you can use the cas to do this if you are unable to tune the ecu you have.