{"title":"BMW Z4-Series ECU","description":"","products":[{"product_id":"renntech-ecu-upgrade-z4-35is-e89-2008-2012-n54b30to","title":"RENNtech ECU Upgrade Z4 35iS E89 (2008-2012 N54B30to)","description":"\u003cp\u003e\u003cstrong\u003eRENNtech ECU Upgrade Z4 35iS E89 (2008-2012 N54B30to). Up to 420 HP + 435 TQ.\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eGains: +100 HP \u0026amp; +103 LB-FT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur proprietary BMW ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units.\u003c\/p\u003e\n\u003cp\u003eThese same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our proprietary tuning software and approach for BMW is completely unique and independent from our Mercedes tuning program.\u003c\/p\u003e\n\u003cp\u003eRENNtech tuning software for BMW offers significant gains in performance and throttle response without sacrificing your daily driver BMW's reliability.\u003c\/p\u003e\n\u003cp\u003eBy modifying ignition timing and throttle mapping, optimizing air\/ fuel ratios, increasing the top speed limiter, improving engine cooling and modifying boost mapping for turbo charged vehicles; RENNtech performance software unleashes your BMW's true potential.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eZ4 35iS  E89 (2008-2012 N54B30to) Stock Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12.1599998474121px; line-height: 1.3em;\"\u003e320 HP \/ 332 TQ\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 12.1599998474121px; line-height: 1.3em;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModified Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e420 HP @ 5700 RPM \/ 435 TQ @ 4300 RPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGains:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 12.1599998474121px; line-height: 1.3em;\"\u003e+100 HP \/ +103 LB-FT\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RENNtech Inc","offers":[{"title":"Default Title","offer_id":46786001305856,"sku":"54.E89.Z4TO","price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/9972\/5312\/files\/ecu_m156_m272_m273_ee91aa83-44ca-4388-af3f-1ebe7fd97d83.jpg?v=1751275173"},{"product_id":"renntech-ecu-upgrade-z4-35i-e89-2008-2012-n54b30","title":"RENNtech ECU Upgrade Z4 35i E89 (2008-2012 N54B30)","description":"\u003cp\u003e\u003cstrong\u003eRENNtech ECU Upgrade Z4 35i E89 (2008-2012 N54B30). Up to 420 HP + 435 TQ.\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eGains: +120 HP \u0026amp; +135 LB-FT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur proprietary BMW ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units.\u003c\/p\u003e\n\u003cp\u003eThese same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our proprietary tuning software and approach for BMW is completely unique and independent from our Mercedes tuning program.\u003c\/p\u003e\n\u003cp\u003eRENNtech tuning software for BMW offers significant gains in performance and throttle response without sacrificing your daily driver BMW's reliability.\u003c\/p\u003e\n\u003cp\u003eBy modifying ignition timing and throttle mapping, optimizing air\/ fuel ratios, increasing the top speed limiter, improving engine cooling and modifying boost mapping for turbo charged vehicles; RENNtech performance software unleashes your BMW's true potential.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eZ4 35i  E89 (2008-2012 N54B30) Stock Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e300 HP \/ 300 TQ\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModified Performance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e420 HP @ 5700 RPM \/ 435 TQ @ 4300 RPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGains:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e+120 HP \/ +135 LB-FT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"RENNtech Inc","offers":[{"title":"Default Title","offer_id":46786003632384,"sku":"54.E71.X6N54","price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/9972\/5312\/files\/ecu_m156_m272_m273_ee91aa83-44ca-4388-af3f-1ebe7fd97d83.jpg?v=1751275173"}],"url":"https:\/\/store.renntechmercedes.com\/es\/collections\/bmw-z4-series-ecu.oembed","provider":"RENNtech Inc","version":"1.0","type":"link"}