John, I'm not running a TPI or a turbo now. I'm just kickin around the idea and enjoy the discussion. I'm talking about running a turbo on a street engine. The way I understand it is if you run more than about 8 psi boost for length of time you will creat so high of combustion chamber temp. that you will fry pistons. 30 psi boost is ok for 8 second blasts at the strip but not on a street engine. If you put one on keepus informed on your progress. thanks Gael
