Outer Limits 4x4 Board

i know its a stupid question but do turbo wastegate actuators do they work on boost or vacuum to operate???

boost mate

is there an easy way to test it??

mate look at this thread i did might help you out

remember when you are setting the actuator up it only needs to open the wastegate up a little maybe 2mm at most.

http://www.outerlimits4x4.com/ftopic196 ... highlight=

thanks something else i hadnt considered or known about you guys a great!!

There are vacuum operated wastegates, but they're only found on computer controlled engines. The vacuum actuator lets the computer drop boost completely if it wants.
Pretty much all variable vane turbos have vacuum actuators.