Quote Originally Posted by Lin Dan View Post
My friend loves to drive his fortuner on "sports/power" mode. Does it mean that the turbo is engaged in most cases?
Peak torque is attained when the turbocharger starts spooling. For turbo diesels, it is within 1500 to 3600 rpm. Sports mode in most vehicles is a setting when the throttle is more responsive to attain higher rpms.

For turbo gas engines, peak torque is attained between 1500 to 5500 rpm. Euro gas turbo cars tend to spool its turbo earlier (1500 rpm) while most Japanese gas turbo cars have it past 2k rpm.