A dirty turbo will eventually cause "not only boost issues" but almost certainly over-boost issues (eventually). You can weaken the "Torque-to-Yield" head bolts and then have leaking head gaskets.If the turbo is dirty, what is the worst that could happen? Also the reason I mentioned the new turbo setup is because I had asked the shop what the best way to get somewhere around 400-450 h.p to the ground would be and I want the power to be reliable. This is a daily driver and will continue to be a daily driver so reliability is a must. What do you think?