I'd be worried that the stress would just cause the motor to fail after a period of time on only 8 pounds. Then again, maybe if it was going to fail due to stress it would fail the first time you went WOT. You don't think adding boost (even low boost like 6-8 pounds) causes slow breakdown of the motor over time?
Dude sure you are taking a risk but once again it comes down to driving habits and what kind of tune you get. It's not like you are in boost all the time. When you are driving the car normal the car does not even know there's a blower on it....:sleeping: