Once you reach a certain level of airflow, the Power Stroke's stock turbine housin becomes a restriction.Banks Quick-Turbo housing is designed to eliminate backpressure and maximize boost while eliminating turbo lag, giving you hesitation-free power-and lots of it.
under high-boost conditions, the stock actuator's weak spring allows the wastegate to blow open, limiting mid-range torque. Bleed orifices (also known as "boost foolers") just make it worse.
Only Banks solves this problem by replacing the boost actuator. BigHead holds the wastegate closed for quicker boost, then controls the opening to maintain peak boost for superior acceleration and mid-range pulling power
Midway through 1999, Ford modified the compressor wheel to reduce turbo whistle. At high-boost levels, the wheel goes into "compressor surge"-superheating the air, resulting in poor performance and possible turbo damage.
Banks high-boost compressor wheel allows powerful boost levels to be achieved with no surge and maximum efficiency.
Banks developed the Quick-Turbo turbine housing to eliminate sluggishness "out of the hole" and produce strong acceleration. 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 199914-2003 models with a high-boost compressor wheel, built for higher boost levels without compromising turbo performance.