tested that theory before he changed out the springs. But they are made to run off your stock boost pressure, they have gone higher. Before if/when the spring was under too much pressure and opened, even just the little bit we're talking about the air would have recirculted back, now it just dumps that air into the atmosphere lowering your overall boost that is getting to the TB/intake. Like I said im not sure if its tested so you never know....
"If everything seems under control, you're just not going fast enough." - Mario Andretti