{"product_id":"4-1-header-system","title":"4-1 Header System","description":"This 4-1 header design features four tubes merging into a true collector, complemented by a specially designed megaphone. This setup is optimized to create a scavenging effect, which directly contributes to increasing horsepower and torque. It is built for high-compression, 2.0L and up, fully built engines, and performs exceptionally well with race gas, E85, or nitrous oxide, targeting builds aiming for 250+ horsepower.\n\nFitment is provided for EG, DC, EK, and EF chassis equipped with a B series engine swap. However, due to its full-race nature, some modifications may be necessary. These can include removing the air conditioning system, extending the O2 sensor cable, and potentially utilizing a half-size radiator, a tucked radiator setup, or a slim fan.\n\nIncluded hardware facilitates installation. While reviews praise the welds and value for the price, one user reported a warped header flange requiring machining.","brand":"Jackspania","offers":[{"title":"Default Title","offer_id":52688963436856,"sku":"JSR11372","price":374.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/664210239.webp?v=1784899454","url":"https:\/\/store.motormia.co\/products\/4-1-header-system","provider":"MOTORMIA","version":"1.0","type":"link"}