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• Introduction to Harley-Davidson® Electronic Sequential Port Fuel Injection (ESPFI)

  In this segment, we'll attempt to explain the components and operation of the ESPFI systems offered on 2001 and later Softail®, 2002 and later Touring, 2004-2005 Dyna®, and 2002 and later V-Rod motorcycles. Ready? OK, let's start out with... Posted May 12 2008, 09:38 AM by cmissal with | with 2 comment(s) Filed under: Fuel Injection, EFI, Exhaust Pipes, Fuel

• Exhaust Terms Explained

  As part of our annual exhaust mega test issue, we decided to clear the air on some of the venting vernacular you’ll see elsewhere in this issue. We quote below from “The Big Twin High Performance Guide,” by William Penish, which we used... Posted May 09 2008, 05:00 PM by cmissal with Filed under: Exhaust Pipes, Pulse, Torque Cone, Collector, Port, Gasket, Scavenging, Muffler, Baffle, Exhaust Terms, Flange, Reversion, Clamp, Exhaust Systems, Backpressure, Flow

• Will I Need To Rejet?

  As moderator on the J&P Cycles® website, www.jpcycles.com, I get a chance to exchange posts about a variety of topics. As a technical advisor at J&P, I talk with hundreds of people each week. I am surprised how often I answer the same questions... Posted May 09 2008, 04:41 PM by cmissal with Filed under: Exhaust System, Pipes, Pipe Replacement, Rejet, Exhaust Pipes