A big turbo and a small engine means lots of turbo lag right? Perhaps not! Compressor surge is not a new issue in the drag racing world where the large turbo and small engine (small capacity) game was probably created, but for those circuit racing who want the benefits of a big turbo without the downside, generally being turbo lag and poor response, it generally is no worth the trade off. At events like the World Time Attack Challenge we are seeing more and more smaller engines running large tur

Compressor Surge, Blow Off Valves and Turbo Maps - Your questions answered | Turbosmart