Post by
C-Kwik »
https://forums.nicoclub.com/c-kwik-u426.html
Sun Mar 28, 2004 7:15 pm
My reputation precedes me. For 300 to 400 HP, a small turbo will choke the motor and be highly inefficient which both adds to the restriction in the turbine and works the intercooler harder. T3's will start seeing this problem before 300 HP. A T4 of some sort will handle it much better. If you want a good balance of response and efficiency a T3/T4 is a good option. But a straight T4 will flow better, especially as you get closer to 400 HP. And to keep in mind, a larger turbo runs cooler and makes more power using less boost. This is important to understand as it will dictate, in part, if and how much work will need to be done to the motor to handle the additional boost.