{"product_id":"r35-gtr-speed-density-conversion-kit","title":"R35 GTR Speed Density Conversion Kit","description":"\u003cp\u003eThe factory MAF sensors max out around 700whp, at which point they can no longer meter the increased air volume. Speed Density is the answer for higher power levels, and a must for anyone who wants to run vent-to-atmosphere blow off valves.\u003c\/p\u003e\n\u003cp\u003eWhen calibrated properly there is no sacrifice in drivability; your car will drive just like stock. In fact, Speed Density tuned cars are often referred to as the smoothest driving cars, especially on the R35 platform. But to properly calculate SD based fueling, the air intake temperature sensor must move from its pre-intercooler location to a post-intercooler location. \u003cspan style=\"text-decoration: underline;\"\u003e\u003cem\u003eThis means moving the temp sensor from the intake to the charge pipe.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit does exactly that: it relocates the intake air temperature reading from the factory Mass Air Flow housing to the upper intercooler pipe using a replacement charge pipe pressure sensor with an integrated air intake temp sensor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e100% Plug and Play, no cutting or splicing\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHarnesses proudly handmade in the USA with automotive-grade TXL XLPE insulated wire and assembled in an ISO 9001 Certified Facility\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWe are a Hitachi Japan authorized dealer and use only genuine OEM Nissan\/Hitachi sensors\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eCustom tuning required\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOptional 4 BAR charge pipe upgrade\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOptional 4 BAR manifold upgrade\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpeed Density (Kit A)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eDesigned for cars that no longer run MAF sensors. Aftermarket intakes from companies like AMS and Boost Logic delete the MAF slots entirely for big power builds and a cleaner engine bay, and Kit A is built for exactly those setups.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpeed Density (Kit B)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eOur most popular kit. Kit B allows you to plug the original MAF sensors back in, keeping the factory intake hardware in place for a more OEM look.\u003c\/p\u003e\n\u003ch4\u003eHow to choose your options:\u003c\/h4\u003e\n\u003cp\u003eThe first option is your \u003cstrong\u003eCHARGE PIPE\u003c\/strong\u003e sensor (stock or 4 BAR). The second option is your \u003cstrong\u003eINTAKE MANIFOLD\u003c\/strong\u003e sensor (stock or 4 BAR).\u003c\/p\u003e\n\u003cp\u003eStock turbo cars do not need the 4 BAR upgrade. Only cars with upgraded turbos need a 4 BAR sensor in the intake manifold. A 4 BAR sensor in the charge pipe is not required but is great for checking bank to bank boost pressures.\u003c\/p\u003e\n\u003cp\u003ePlanning to run a Fuel Pressure Sensor? We highly recommend it. Our most cost effective option is the \u003ca href=\"https:\/\/www.viscontituning.com\/products\/fuel-pressure-monitoring-kit-for-r35-gtr?variant=1000360476680\"\u003echarge pipe sensor harness\u003c\/a\u003e, but our most popular is the \u003ca href=\"https:\/\/www.viscontituning.com\/products\/fuel-pressure-monitoring-kit-for-r35-gtr?variant=1000360607752\"\u003eMAF Bank 1 + SD kit\u003c\/a\u003e, which combines Speed Density and fuel pressure monitoring in one kit, so you should consider that before purchasing this.\u003c\/p\u003e","brand":"Visconti Tuning","offers":[{"title":"(Kit A) Speed Density \/ STOCK \/ STOCK (MANIFOLD)","offer_id":46395074871353,"sku":"sku-506280605","price":350.0,"currency_code":"USD","in_stock":true},{"title":"(Kit A) Speed Density \/ STOCK \/ 4 BAR (MANIFOLD)","offer_id":46395074904121,"sku":"sku-28712232845364","price":450.0,"currency_code":"USD","in_stock":true},{"title":"(Kit A) Speed Density \/ 4 BAR \/ STOCK (MANIFOLD)","offer_id":46395074936889,"sku":"sku-36732221896","price":400.0,"currency_code":"USD","in_stock":true},{"title":"(Kit A) Speed Density \/ 4 BAR \/ 4 BAR (MANIFOLD)","offer_id":46395074969657,"sku":"sku-28712232878132","price":500.0,"currency_code":"USD","in_stock":true},{"title":"(Kit B) Speed Density \/ STOCK \/ STOCK (MANIFOLD)","offer_id":46395075002425,"sku":"sku-509013345","price":375.0,"currency_code":"USD","in_stock":true},{"title":"(Kit B) Speed Density \/ STOCK \/ 4 BAR (MANIFOLD)","offer_id":46395075035193,"sku":"sku-28712232910900","price":475.0,"currency_code":"USD","in_stock":true},{"title":"(Kit B) Speed Density \/ 4 BAR \/ STOCK (MANIFOLD)","offer_id":46395075067961,"sku":"sku-36732221960","price":425.0,"currency_code":"USD","in_stock":true},{"title":"(Kit B) Speed Density \/ 4 BAR \/ 4 BAR (MANIFOLD)","offer_id":46395075100729,"sku":"sku-28712232976436","price":525.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/2886\/5081\/files\/r35-gtr-speed-density-conversion-kit.png?v=1787852817","url":"https:\/\/islandracewerks.com\/products\/r35-gtr-speed-density-conversion-kit","provider":"Island Racewerks","version":"1.0","type":"link"}