{"product_id":"dynatek-dyna-s-ignition-module-dual-fire-item-no-902525","title":"Dynatek, Dyna-S ignition module. Dual fire Item No: 902525","description":"\u003cp class=\"whitespace-pre-wrap\"\u003eDyna-S ignition module for dual fire applications. Comes complete with rotor. Can be used for single or dual plugged heads. The required mechanical advance unit must be purchased separately. \u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap\"\u003eNote: Dyna coil recommendations: Dyna 5 Ohm for street use, Dyna 3 Ohm for race use. \u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap\"\u003eNote: It is recommended to use ignition modules \u0026amp; coils of the same manufacturer. Intermixing different brands may cause premature failure. \u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap\"\u003eNote: Difference between Single \u0026amp; Dual Fire: \u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap\"\u003e- Dual Fire - This is the way the earlier, pre-Twin Cam, engines work. A single coil is used and both spark plugs fire simultaneously. This is the simplest system. The 'wasted' spark is sometimes said to be horsepower robbing. \u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap\"\u003e- Single Fire - This is the way the stock 00-up Twin Cam engines work. Two separate coils will fire the spark plugs independently and only the spark plug of the cylinder that is on compression stroke will be fired. It is said that these engines vibrate less and can improve power. The effects will become more pronounced with hotter cams and higher RPM. \u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"whitespace-pre-wrap\"\u003eNote: For the single fire Dyna-S ignition module see 902530.\u003c\/p\u003e\n\u003ch2 class=\"mb-3 font-bold text-2xl md:mb-6.5\"\u003eFitment\u003c\/h2\u003e\n\u003cdiv class=\"prose prose-sm mb-6 max-w-none whitespace-pre-line text-gray-700\"\u003e70-99 Big Twin (Excl. TC) and 71-03 XL Sportster (NU)\u003c\/div\u003e","brand":"TDM parts","offers":[{"title":"Default Title","offer_id":56916569129286,"sku":null,"price":1358.5,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/5922\/5158\/files\/902525k_1742211065-UMgb5tu.avif?v=1783327525","url":"https:\/\/www.tdmparts.dk\/products\/dynatek-dyna-s-ignition-module-dual-fire-item-no-902525","provider":"TDM parts","version":"1.0","type":"link"}