[rotorwrench]

Twin turbos can equal twice the headaches. Makes for a very busy engine compartment and exhaust system. I had enough troubles with only one on the old 47G3 series helicopters. When it is all working right it will make the engine breath but it takes a while to get over the turbo lag. The little ones spool up faster but they don't pump as much either. It will still have some lag. Would be Ok on the long dry lakes though. For street, it's hard to beat the roots type supercharger. Be prepared to spend a LOT.