highest idle
much over 30psi the stock exhaust housing is choking the engine BADLY. The drive pressures and EGTs are going through the roof, not good for the engine or the turbo. Your just asking for a big $$$ repair bill!
On a HX35 your max effecient boost is about 35% anything above that, its just more hot air. Also since your dumping alot more fuel I'm thinking the egr is helping your bog situation since its just dumping alot of soot/incompletely burnt fuel back into the motor. Like you said you need to get rid of that crap.




