Is there any way to do this on a BW S300G other than adjusting then driving and watching the gauge? Is there any type of apparatus that can be put inline with a compressor to control PSI and adjust the wastegate to my preferences?

 

Yes you can set it up with regulated shop air that is how I did mine. Never trust what anyone tells you the waste gate is set for because it couls cost you your head gasket...........

 

Thanks for the info. How exactly did you regulate the PSI? Are you just disconnecting the WG hose from the compressor housing and running the air through there? Thanks again!