Tao Shangguan wrote on Friday, November 16, 2007 - 10:06 am:Air can pass throu at 20PSI thats not major issue. Just it will increase the ehxuast temp. standard TR43 hits exhaust temp of 700 degrees, and TR43HF hits around 850 degrees. It can not allow to pass 950 degrees as steel will start to crack.
Exhaust gas temperature has no direct link to turbo size. Ignition advance and fuelling can keep temperatures within reason no matter how much power the engines making or how much boost is going through.