Unless you get one that is much too small, you will not have any issues with it spooling at part throttle rpms. It is a shear matter of the exhaust flow with the throttle body being mostly closed.
As a for instance, on the wrx stock turbo, it is very small from the factory and it will spool a little bit if you get into the throttle in 5th gear while cruising over 70 mph or so or if you go up a big hill. Put on a big turbo and that goes away pretty quickly.
The main determining factor will still be your right foot
Originally Posted by crashtke
Unless you get one that is much too small, you will not have any issues with it spooling at part throttle rpms. It is a shear matter of the exhaust flow with the throttle body being mostly closed.
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