New Performance Plenum Package for the ultimate performance upgrade to Ford XR8 and GT Boss Engines
LID/THROTTLE BODY/RUBBER PIPE ......STRAIGHT BOLT ON TO FACTORY BOX
Yella Terra's Hi Flow Performance Plenum for the 5.4 4V Boss Engine. The new Plenum can be used for supercharged, turbo and naturally aspirated performance engines. The new shape of the Plenum is designed to provide a balanced hi volume air flow to each port runner.
The ability to get more air to your Boss engine, means more power & low end torque. The new Yella Terra Hi Flow Performance Plenum, has been designed to accept a larger twin blade or oval mono blade throttle body while maintaining the factory look. (ONLY TWIN BLADE ON OFFER AS PACKAGE)
With the ever increasing demand for power this hi flow plenum delivers an increased 95% flow capability ideal for any performance boss engine.
Features Include:
• Unique hi flow quality design
• Designed to address Fords uneven air delivery to port runners
• Eliminates shrouding around the corner port intakes.
• 20% volume Increase over Standard Factory Lid
• 95% increase in flow capability
• Increases torque and mid range power.
• For high HP applications when T/B size becomes a restriction
• Uses the genuine Ford GT twin 60mm blade (YT5400TB) Included
• Available in Heavy Duty Powder coated 260 XR8 black or 290 GT
blue
• Easy fit utilizing original factory fittings and MAP sensor
• Can be used with original engine cover and top decal plate.
• Suits N/A BA BF and FG Boss 260 290 V8
• Suits YellaTerra Boss S/C kit
To get the maximum benefit of the increased air flow a custom ECU recalibration is required.