{"product_id":"holley-efi-gen-iii-hemi-coil-harness-late-coils-558-311","title":"Holley EFI Gen III HEMI Coil Harness - Late Coils - 558-311","description":"Chrysler has used two different coils on the HEMI engine series with 2006 being the year that the change was phased throughout the truck and car line. Fortunately the two coils are very different visually and makes for a simple review. If the coil requires spark plug wires, it is the early coil. If the coil does not require plug wires and simply has two boots that connect to the plugs in the cylinder head, it is the later coil. View the image gallery for images of both types.\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTake control of your Gen III HEMI with Holley EFI by controlling fuel and spark.  Great for power upgrades and engine swaps.\u003c\/li\u003e\n\u003cli\u003eCapable of tuning with power adders such as nitrous, superchargers or turbos and compatible with methanol and water injection\u003c\/li\u003e\n\u003cli\u003eHarnesses are available to connect to a Gen III HEMI engine for the most advanced fuel and timing controls available\u003c\/li\u003e\n\u003cli\u003eEach Harness is designed in fit and function specifically for the Gen III HEMI engine platform\u003c\/li\u003e\n\u003cli\u003eAll wiring is TXL grade copper wiring with minimal weight, high temp sleeve in a small diameter\u003c\/li\u003e\n\u003cli\u003eFactory style terminations provide a strong, secure connection\u003c\/li\u003e\n\u003cli\u003eConnectors are OEM grade for a correct, positive fit\u003c\/li\u003e\n\u003cli\u003eEach harness is routed through a split-loom braid for protection and great looks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Details:\u003c\/strong\u003e Gen III HEMI Coil Harness, Late Coils, for HP EFI \u0026amp; Dominator EFI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarness Application:\u003c\/strong\u003e HEMI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarness Type:\u003c\/strong\u003e Ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e HEMI Coil Harness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Notes:\u003c\/h3\u003e\n\u003cp\u003eFor coil-on-plug with no spark plug wires.  The HEMI's Variable Valve Timing is not supported by the Holley EFI systems at this time. You can run an engine that is equipped with VVT, but the cam timing will revert to the mechanical default. The Holley R\u0026amp;D team is working on an accessory harness that will drive the VVT actuator.  However, it is not available at this time.   The HEMI's Multi-Displacement System (MDS) was primarily designed for fuel economy purposes and does not need to be connected when switching to a Holley EFI system. NOTE: Not legal for sale or use on pollution controlled vehicles.\u003c\/p\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":49715492094190,"sku":"HLY-558-311","price":207.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/9110\/6798\/files\/a480197708658eadf36649df3734b1ee4e80c8a2.jpg?v=1791569249","url":"https:\/\/elmosspeedshop.com\/products\/holley-efi-gen-iii-hemi-coil-harness-late-coils-558-311","provider":"Elmo's Speed Shop","version":"1.0","type":"link"}