Cam you run the scoob without a dump valve to get the chattering fluttering sound as the air is forced back?

 

I run my other car with no d\v
Makes some weird noises was told when mapped td05 no problem

 

fine with the TD turbo's but no DV has been known to damags VF turbo's (as fitted to various STi's)

 

i have had a "stiff" recirc valve for a while which has the vf23 chattering at low revs, this has been like this for over a year, and it has not broken

to be honest i have fully expected it to
broke a few vf turbos in my time

this one was rebuilt by myself from second hand parts and was never balanced either

i figured i had randomly managed to balance it myself by accident

 

ok ill wait till i get a tdo5 then, if its risky on a vf