Chatter is not a bad idea there are many myths that running without a DV is a bad idea.. i no on my car there was a guy that run back to back tests iirc running the same turbo with and without a DV and the turbo didnt wear out any quicker without one.. Only problem is on some newer cars such as VAG ones there are many sensors that dont like you running without one.. all jap cars are fine without and cars such as RS turbos etc as the management on them is much much simpler
