you can run that boost for short spurts, dyno and drags but not burnouts or track events and have done so for 8 years now with two sets of turbos, first set had to be changed cause the bearing where gone with 4mm + shaft play and no damage to either wheels.
yeah comp test is a good start but if it isn't given a slight wiff of blue smoke from exhaust then i'd say comp would be good, a small but consistent leak would be over come with the boost controller making the boost level, also check there isn.t a leak around the exhaust manifold before the turbos, even a small leak will rob power.
Joe, the design of the dump pipe can make a big difference ( bigger then front pipes ) in both responce and power and if you get to see the CES comp series pipes in real life you can see way they work so well, I've tried a few styles on both the 32 and 34 and i have CES on both now, the normal ones on the 32 with equal lenght front pipe and the longer comp ones on the 34