Developed to maximize turbo - diesel efficiency, Quick - Turbo provides massive instantaneous torque. BigHead Wastegate delivers quick, controlled turbo boost. TURBO UPGRADE KIT. Banks developed the Quick - Turbo to eliminate sluggishness out of the hole and produce strong acceleration and lower EGTs. Quick - Turbo produces massive torque right from idle, achieves a higher peak faster, maintains more boost through the powerband, and doesn't over - boost. Banks' exclusive BigHead wastegate actuator prevents wastegate blow - open by keeping the valve seated at higher pressures, increasing mid - range torque and top - end power. Banks corrects boost - level limits in late 1999.5 - 2003 models with a high - boost compressor wheel, built for higher boost levels without compromising turbo performance. Includes Quick - Turbo housing, Big - Head wastegate actuator, and Compressor Wheel.