KILLER B PERFORMANCE HEADERS -EJ SERIES EL 4-1 HOLY HEADER/UP-PIPE HH4-1

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STOCK PHOTO MAY BE USED. YOU WILL RECEIVE CORRECT ITEM FOR YOUR VEHICLEThe Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determ ine optimal design to increase power as much as possible throughout the rev range. Short as possible primaries with a single secondary significantly decrease header volume allowing exhaust gas pressure to build quickly. Symmetrical 4-1 design maintains high and consistent exhaust velocity as RPMs rise. You can expect faster spool up time compared to long primary/double secondary designs. A difference you will immediately notice in throttle/boost response and the ability to hold more power higher into the revs. Show more