{"product_id":"killer-b-el-4-1-holy-header-up-pipe-egt-bung-2004-2021-subaru-sti-2002-2014-wrx-2004-2013-forester-xt-2004-2009-outback-xt-2004-2009-legacy-gt-vcv1xl","title":"Killer B EL 4-1 Holy Header\/Up-Pipe - EGT Bung - 2004-2021 Subaru STI \/ 2002-2014 WRX, 2004-2013 Forester XT \/ 2004-2009 Outback XT \/ 2004-2009 Legacy GT","description":"\u003ch1\u003e\u003cstrong\u003eKiller B Motorsport 321 Stainless Holy Header\/Up-Pipe\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cdiv class=\"oe_structure\"\u003e\n\u003cp\u003eThe Killer B Motorsport Holy Header was developed using state of the art CAD software \u0026amp; simulations to determine optimal design to increase power as much as possible throughout the rev range. Short as possible primaries with a single secondary decrease header volume significantly, allowing exhaust gas pressure to quickly build. 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 that you will immediately notice in throttle\/boost response and the ability to hold more power higher into the revs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Killer B Motorsport","offers":[{"title":"Default Title","offer_id":45712547512406,"sku":"KILHH4-1-EGT","price":622.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/0411\/1190\/files\/xj04zxhnmv3p_1f547134-3195-45ba-8e44-61274f0e036f.jpg?v=1788781892","url":"https:\/\/truegearus.com\/products\/killer-b-el-4-1-holy-header-up-pipe-egt-bung-2004-2021-subaru-sti-2002-2014-wrx-2004-2013-forester-xt-2004-2009-outback-xt-2004-2009-legacy-gt-vcv1xl","provider":"TrueGear","version":"1.0","type":"link"}