Seems to me that I read he is also changing wg and bov when going between the two kits .I think the issue is related to those or the install .However the test video of the turbo does seem odd to me but I can't say I have ever tested mine like that and checked for air coming out of the oil drain or coolant ports.Garrett told him it was normal which also does not seem normal but they are the experts .I just don't see how the turbo produces the set 6 psi how it would make no power or not be able to go beyond that boost level an odd situation.Lets face it exhaust happens turbo spins = boost it has to be something besides the turbo imo . However knowing who is tuning it I highly doubt / am certain the tuner is NOT the issue as Vit tunes many cars and I think he certainly knows his stuff .