Secret Weapon Intake System
+ Highest Horsepower in 5,500-6,000 RPM range
+ Second Highest Horsepower in 4,500-5,000 RPM range
+ Second Highest Horsepower in 4,000-4,500 RPM range
+ Adds power from 3,500 to 6,500 RPM
– Fitment is challenging
– MAF sensor needs spacers
– No fixed mount for intake included, rests in airbox
– Too Rich A/F ratio at High RPM for Power Loss
– Couldn’t find a way to use the cold-air tube
Overview: The Secret Weapon is short ram system with a heat shield. A cold-air feeder hose can attach to the filter. A unique double tube design is used in part of the intake tube.
Analysis: The Secret Weapon intake showed some promise, but fell a bit short on some of the details. Mid-range performance gains were better than average. Unfortunately, the air-fuel ratio achieved at higher RPMs was too rich. The result was a drop in high-RPM and peak power.
(Left) Our intake needed spacers (not included) to properly mount the sensor. (Right) This top of the filter features a funnel for the cold-air hose feed.
(Left) A poly foam element is supported by a metail mesh outer. (Right) A concentric inner tube is one unique feature of the Secret Weapon.
Average Horsepower + Average Air Fuel Ratio
• Intake Showcase (Part One)
AEM ETI INTAKE SYSTEM, BLITZ ADVANCED POWER AIR, HKS PREMIUM SUCTION, INJEN SP SERIES, K&N 69-SERIES TYPHOON, TAKEDA MOMENTUM, TRD PERFORMANCE AIR INTAKE, WEAPON-R SECRET WEAPON, APEXI POWER INTAKE FILTER, AVO TURBO WORLD SILICONE INLET COMBO PIPE, BLITZ SUS POWER FILTER LM, K&N REPLACEMENT AIR FILTER
• Intake Showcase (Part Two)