{"title":"BMW 3-Series ECU","description":"","products":[{"product_id":"renntech-ecu-upgrade-335is-e92-e93-2010-2011-manual-dct-n54b30to-3-0l-biturbo","title":"RENNtech ECU Upgrade 335iS E92\/E93 (2010-2011- Manual \u0026 DCT N54B30to 3.0L Biturbo)","description":"\u003cp\u003e\u003cstrong\u003eRENNtech ECU Upgrade 335iS E92\/E93 (2010-2011- Manual \u0026amp; DCT N54B30to 3.0L Biturbo). 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\u003eStock Performance 335iS E92\/E93 (2010-2011- Manual \u0026amp; DCT N54B30to 3.0L Biturbo):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e320 HP @ 5800 RPM \/ 332 TQ @ 1400 RPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\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+100 HP \/ +103 LB-FT\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RENNtech Inc","offers":[{"title":"Default Title","offer_id":46785982103808,"sku":"54.E9x.335isN54","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-335i-ix-e90-e92-e93-2007-2010-manual-steptronic-n54b30","title":"RENNtech ECU Upgrade 335i\/iX E90\/E92\/E93 (2007-2010 Manual \u0026 Steptronic N54B30)","description":"\u003cp\u003e\u003cstrong\u003eRENNtech ECU Upgrade 335i\/iX E90\/E92\/E93 (2007-2010 Manual \u0026amp; Steptronic N54B30). Up to 420 HP + +435 TQ.\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eGains: +120 HP \/ 135 TQ.\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\u003eStock Performance 335i\/iX E90\/E92\/E93 (2007-2010 Manual \u0026amp; Steptronic N54B30):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e300 HP @ 5800 RPM \/ 300 TQ @ 1400 RPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\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","brand":"RENNtech Inc","offers":[{"title":"Default Title","offer_id":46785985478912,"sku":"54.E9x.335ixN54","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-335d-e90-2007-2011-n73n2-steptronic-diesel","title":"RENNtech ECU Upgrade 335d E90 (2007-2011- N73N2 Steptronic Diesel)","description":"\u003cp\u003e\u003cstrong\u003eRENNtech ECU Upgrade 335d E90 (2007-2011- N73N2 Steptronic Diesel). 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