{"product_id":"fueltech-peak-and-hold-4a-1a-driver","title":"FuelTech Peak \u0026 Hold 4A\/1A Injector Driver","description":"\u003cp\u003eThe FuelTech Peak \u0026amp; Hold 4A\/1A is a 4-channel current-controlled driver for low impedance fuel injectors with 1.5 to 3 ohms of resistance. It sits between the ECU and the injectors, giving them a high opening current and a lower holding current so they open quickly without overheating. It's offered in three current ratings; this is the 4A\/1A version.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCurrent-control driver for low impedance injectors\u003c\/li\u003e\n\u003cli\u003e4 channels\u003c\/li\u003e\n\u003cli\u003eMatched to injectors of 1.5 to 3 ohms\u003c\/li\u003e\n\u003cli\u003eDimensions: 115 x 90 x 33 mm\u003c\/li\u003e\n\u003cli\u003eMounting kit included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDriver\u003c\/th\u003e\n\u003cth\u003eInjector impedance\u003c\/th\u003e\n\u003cth\u003eExample capacity\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e8A\/2A\u003c\/td\u003e\n\u003ctd\u003eBelow 1.5 ohm\u003c\/td\u003e\n\u003ctd\u003eFT Injectors; up to 16 Bosch 160 lb\/h (4 per channel); 8 Siemens low impedance (2 per channel); 4 MSD low impedance, 2 ohm (2 per channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4A\/1A\u003c\/td\u003e\n\u003ctd\u003e1.5 to 3 ohm\u003c\/td\u003e\n\u003ctd\u003e8 Bosch 160 lb\/h (2 per channel); 4 Siemens 83 lb\/h; 4 MSD, 2 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2A\/0.5A\u003c\/td\u003e\n\u003ctd\u003e3 to 7 ohm\u003c\/td\u003e\n\u003ctd\u003e4 Bosch 160 lb\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eChoosing the right driver\u003c\/h3\u003e\n\u003cp\u003eSet a multimeter to the 200 ohm range and touch the leads together to record their own resistance (for example 0.3 ohm). Then measure across the injector terminals and subtract the lead reading (for example 4.8 - 0.3 = 4.5 ohm).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAbove 7 ohm: high impedance, no Peak \u0026amp; Hold driver needed\u003c\/li\u003e\n\u003cli\u003e3 to 7 ohm: 2A\/0.5A\u003c\/li\u003e\n\u003cli\u003e1.5 to 3 ohm: 4A\/1A\u003c\/li\u003e\n\u003cli\u003eBelow 1.5 ohm (FT Injector, Billet Atomizer): 8A\/2A\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eLow impedance Billet Atomizer injectors made after November 2012 need the 8A\/2A regardless of measured resistance. Billet Atomizer injectors with serial numbers before C300**** (made before November 2012) should only use the 4A\/1A.\u003c\/p\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 Peak \u0026amp; Hold 4A\/1A driver\u003c\/li\u003e\n\u003cli\u003e1 operation and installation guide\u003c\/li\u003e\n\u003cli\u003eMounting kit: 4 rubber mounts, 4 washers, 4 1\/4\" nuts\u003c\/li\u003e\n\u003cli\u003e6 ft unterminated Peak \u0026amp; Hold harness (only with the harness option)\u003c\/li\u003e\n\u003cli\u003e1 FuelTech carbon fiber sticker\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/files.fueltech.net\/manual\/Ingles\/PH_trilingue.pdf\" target=\"_blank\" rel=\"noopener\"\u003eFuelTech Peak \u0026amp; Hold manual (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What injectors is the 4A\/1A driver for?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Low impedance injectors measuring 1.5 to 3 ohms.\"}},{\"@type\":\"Question\",\"name\":\"How do I know which Peak \u0026 Hold I need?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Measure injector resistance with a multimeter on the 200 ohm range, subtracting the lead resistance. Above 7 ohm needs no driver; 3 to 7 ohm uses the 2A\/0.5A; 1.5 to 3 ohm uses the 4A\/1A; below 1.5 ohm uses the 8A\/2A.\"}},{\"@type\":\"Question\",\"name\":\"How many channels does it have?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Four channels.\"}},{\"@type\":\"Question\",\"name\":\"Is a harness included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Only with the 'w\/ 6ft unterminated harness' option. The base option includes the driver, guide, mounting kit and sticker.\"}},{\"@type\":\"Question\",\"name\":\"What size is the driver?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"115 x 90 x 33 mm.\"}},{\"@type\":\"Question\",\"name\":\"Which driver do Billet Atomizer injectors use?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Low impedance Billet Atomizer injectors made after November 2012 require the 8A\/2A. Units with serial numbers before C300**** (pre-November 2012) should only use the 4A\/1A.\"}}]}\u003c\/script\u003e","brand":"FuelTech","offers":[{"title":"w\/o harness","offer_id":50629627347161,"sku":"3010003324","price":239.0,"currency_code":"USD","in_stock":true},{"title":"w\/ 6ft unterminated harness","offer_id":50629627379929,"sku":"3010003324 \/ 2001000044","price":268.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2734\/8185\/files\/pnh4a_1.jpg?v=1791473023","url":"https:\/\/www.autosportsengineering.com\/products\/fueltech-peak-and-hold-4a-1a-driver","provider":"Autosports engineering","version":"1.0","type":"link"}