A more totally free-flowing intake and exhaust and a higher output gasoline technique will must be additional to deliver a higher air-gasoline ratio and successfully evacuate exhaust gases from your method. Altering valve durations can alter the torque band and on most engines the exhaust and intake durations do not https://jdm-mitsubishi-4b12-outla24439.bloggazzo.com/30688279/everything-about-4b12-outlander-engine-for-sale