Killer B Equal Length 4-1 Holy Header EJ Series Do It Yourself
NOT CARB-APPROVED. ILLEGAL TO USE OR INSTALL IN CALIFORNIA. IF YOU LIVE IN CA, WE CANNOT SHIP YOU THIS ITEM AND YOU WILL BE CHARGED A 10% CANCELLATION FEE IF YOU ORDER. PLEASE LOOK FOR OTHER PRODUCTS WITH CARB APPROVAL.
The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine 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.
This Part Fits:
Year | Make | Model | Submodel |
---|---|---|---|
2008 | Subaru | Forester | Sports 2.5 XT |
2004-2005,2009 | Subaru | Forester | XT |
2006-2010 | Subaru | Forester | XT Limited |
2005,2010-2013 | Subaru | Forester | XT Premium |
2011-2013 | Subaru | Forester | XT Touring |
2002-2007 | Subaru | Impreza | WRX |
2006-2007 | Subaru | Impreza | WRX Limited |
2004-2014 | Subaru | Impreza | WRX STI |
2007,2011-2014 | Subaru | Impreza | WRX STI Limited |
2010 | Subaru | Impreza | WRX STI Special Edition |
2006-2007 | Subaru | Impreza | WRX TR |
2005-2006 | Subaru | Legacy | GT |
2005,2007-2009 | Subaru | Legacy | GT Limited |
2006-2009 | Subaru | Legacy | GT spec.B |
2005-2006 | Subaru | Outback | XT |
2005-2009 | Subaru | Outback | XT Limited |
2015-2016 | Subaru | WRX STI | Base |
2015 | Subaru | WRX STI | Launch Edition |
2015-2016 | Subaru | WRX STI | Limited |
2016 | Subaru | WRX STI | Series.HyperBlue |