{"product_id":"rival-performance-hardware-software-420bhp-tuning-package-bmw-m135i-f20-f21","title":"Rival Performance Hardware\/Software 420BHP Tuning Package - BMW M135i F20\/F21","description":"\u003cp\u003eRival Performance now offer this hardware and software package which takes the BMW N55 engine up to 420BHP and 640NM! Rivalling its B58-powered stablemates for both performance and character.\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe BMW N55 engine is often overlooked when compared to the newer BMW B58 engine, and whilst the B58 is known for becoming a monster with just a couple of easy mods whereas the N55 is considered less tuneable, which doesn't have to be the case!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe N55 engine is limited by its packaging, running a tiny intercooler resulting in a conservative quoted 320BHP and 450NM. \u003cbr\u003e\u003cbr\u003eBy installing a couple of performance hardware upgrades, paired with TRS Performance software solution, the BMW N55 engine goes to 420BHP and 640NM, rivalling its B58-powered stablemates for both performance and character!\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA must-have Hardware\/Software Tuning Package upgrade for the BMW N55 engine.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eINDEPTH PERFORMANCE KNOWLEDGE \u0026amp; BACKING:\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003eTRS Performance found that the key limiting factor on the BMW N55 engine is factory\/stock intercooler is completely unchanged from the lesser models, resulting with incredibly high intake temperatures. TRS Performance ran a completely standard car on the dyno and observed 63 degree intake temperatures. When tested on the road the results were even worse! Road\/track data logs showed a sustained 68 degree intake temperature over a 3rd, 4th and 5th gear acceleration despite the car having high-speed airflow.\u003c\/p\u003e\n\u003cp\u003eNot only is the is detrimental for making power, but when used hard on track, the engine protection systems would limit power further due to the temperatures being too high even on the road. To manage these extreme temperatures was to explore the intercooler options, one that offered an easy installation and OEM fitment, meaning no body modifications, and the ability to revert the car fully back to standard with ease, should there be a need.\u003c\/p\u003e\n\u003cp\u003eAfter conducting exhaustive research, TRS Performance found that the \u003cstrong\u003e\u003ca href=\"https:\/\/www.rivalperformance.co.uk\/products\/airtec-front-mount-intercooler-kit-bmw-m135i-f20-f21\"\u003eAIRTEC N55 Intercooler\u003c\/a\u003e\u003c\/strong\u003e fitted the bill perfectly, substantially lowered intake temperatures, and offered easy fitment and OEM-like installation. \u003c\/p\u003e\n\u003cp\u003eWith an intercooler only, intake temperatures were more than halved compared to the factory\/stock intercooler, with a peak of 28.5 degrees on the dyno and a staggeringly low 26 degrees on the road during the same sustained acceleration 3rd, 4th, and 5th gear pull.\u003c\/p\u003e\n\u003cp\u003eWith the engine cool, it was only right to make sure the rest of the hardware was up to the task, so TRS Performance also opted for \u003cstrong\u003e\u003ca href=\"https:\/\/www.rivalperformance.co.uk\/products\/ngk-laser-iridium-performance-spark-plug-set-silzkbr8d8s-bmw-m135i-f20-f21-m235i-f22-335i-f30\"\u003eNGK Spark Plugs\u003c\/a\u003e\u003c\/strong\u003e and a \u003cstrong\u003e\u003ca href=\"https:\/\/www.rivalperformance.co.uk\/collections\/bmw-m135i-f20-f21?productType=Panel+Filters\u0026amp;sort=best_selling\u0026amp;limit=20\"\u003ePerformance Panel Air Filter\u003c\/a\u003e\u003c\/strong\u003e. \u003c\/p\u003e\n\u003cp\u003eBecause of the engine upgrade, TRS Performance also thought it was only right to sharpen up the gearbox to match the engine, that's why they've included XHP STG3 gearbox tuning as part of the Package! (you can also opt for XHP STG1 or STG2 if you prefer) Manual cars don't require gearbox tuning the package price is reduced. \u003c\/p\u003e\n\u003cp\u003eTRS Performance have been tuning BMW engines for nearly 10 years now, and it’s no surprise they’ve become rather good at it. Everything is custom tailored to both the car \u0026amp; driver's requirements, and created completely in-house within the dyno cell.\u003c\/p\u003e\n\u003cp\u003eWhen tuning the BMW N55, the goal is to give the N55 that much-needed performance and excitement of a true M engine, without sacrificing any drivability or reliability you’d expect from a BMW. Whether you’re enjoying a B-Road blast or completing lap after lap on circuit, your car is going to perform!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRESULTS:\u003c\/strong\u003e\u003cbr\u003eThe results are 420BHP and 640NM (peak torque dependent on owners wishes), the most impressive aspect is not just the peak numbers, but the way the car drives. Torque is progressively fed in to help get the power down and get away from the spikey feeling. Peak power climbs to a new peak promoting you to hold onto the RPM long after the factory\/stock car plateaued and fizzled out. This is the most effective way to transform the driving experience of the BMW N55 engine into something you’d expect from a full-fat M car!\u003c\/p\u003e\n\u003cp\u003eWhat's included?\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.rivalperformance.co.uk\/collections\/bmw-m135i-f20-f21?productType=Panel+Filters\u0026amp;sort=best_selling\u0026amp;limit=20\"\u003eHigh Flow Performance Panel Air Filter\u003c\/a\u003e\u003c\/strong\u003e \u003cbr\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.rivalperformance.co.uk\/products\/ngk-laser-iridium-performance-spark-plug-set-silzkbr8d8s-bmw-m135i-f20-f21-m235i-f22-335i-f30\"\u003e\u003c\/a\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.rivalperformance.co.uk\/products\/airtec-front-mount-intercooler-kit-bmw-m135i-f20-f21\"\u003eAIRTEC Motorsport Intercooler\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.rivalperformance.co.uk\/products\/ngk-laser-iridium-performance-spark-plug-set-silzkbr8d8s-bmw-m135i-f20-f21-m235i-f22-335i-f30\"\u003eNGK NGK Iridium Spark Plugs\u003c\/a\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAIRTEC Boost\/Charge Pipes (optional)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eXHP Stage 3 Gearbox Tuning (automatic transmission only)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTRS Custom Engine Tuning\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePerformance Part Labour Installation\u003c\/li\u003e\n\u003cli\u003eAll Work Carried Out In The Rival Workshop \u0026amp; Dyno Cell \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003enote: image is for illustration purposes and may differ on delivery\u003c\/span\u003e\u003c\/p\u003e","brand":"Rival Performance","offers":[{"title":"Manual Transmission \/ None \/ No Thanks","offer_id":58814084940121,"sku":null,"price":1350.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ None \/ Cold Side","offer_id":58814629904729,"sku":null,"price":1650.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ None \/ Both Sides","offer_id":58814629970265,"sku":null,"price":1800.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ White \/ No Thanks","offer_id":58814630003033,"sku":null,"price":1350.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ White \/ Cold Side","offer_id":58814630035801,"sku":null,"price":1650.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ White \/ Both Sides","offer_id":58814630101337,"sku":null,"price":1800.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ Blue \/ No Thanks","offer_id":58814630134105,"sku":null,"price":1350.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ Blue \/ Cold Side","offer_id":58814630166873,"sku":null,"price":1650.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ Blue \/ Both Sides","offer_id":58814630232409,"sku":null,"price":1800.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ Red \/ No Thanks","offer_id":58814630789465,"sku":null,"price":1350.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ Red \/ Cold Side","offer_id":58814630822233,"sku":null,"price":1650.0,"currency_code":"GBP","in_stock":true},{"title":"Manual Transmission \/ Red \/ Both Sides","offer_id":58814630887769,"sku":null,"price":1800.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ None \/ No Thanks","offer_id":58814592450905,"sku":null,"price":1650.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ None \/ Cold Side","offer_id":58814631182681,"sku":null,"price":1950.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ None \/ Both Sides","offer_id":58814631248217,"sku":null,"price":2100.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ White \/ No Thanks","offer_id":58814631280985,"sku":null,"price":1650.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ White \/ Cold Side","offer_id":58814631313753,"sku":null,"price":1950.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ White \/ Both Sides","offer_id":58814631379289,"sku":null,"price":2100.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ Blue \/ No Thanks","offer_id":58814631412057,"sku":null,"price":1650.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ Blue \/ Cold Side","offer_id":58814631444825,"sku":null,"price":1950.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ Blue \/ Both Sides","offer_id":58814631510361,"sku":null,"price":2100.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ Red \/ No Thanks","offer_id":58814632067417,"sku":null,"price":1650.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ Red \/ Cold Side","offer_id":58814632100185,"sku":null,"price":1950.0,"currency_code":"GBP","in_stock":true},{"title":"Automatic Transmission \/ Red \/ Both Sides","offer_id":58814632165721,"sku":null,"price":2100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/7765\/9225\/files\/N55-HSP-RIVAL_af92a777-ad42-46fa-901e-eec902614d99.jpg?v=1786390550","url":"https:\/\/www.rivalperformance.co.uk\/products\/rival-performance-hardware-software-420bhp-tuning-package-bmw-m135i-f20-f21","provider":"Rival Performance","version":"1.0","type":"link"}