Mapping

Discussion in 'Engine, Fuel and Exhaust' started by PatFLH, Jun 11, 2011.

  1. PatFLH

    PatFLH Member

    5
    11
    0
    Hello all.. I picked up a 2002 Road King with a stock 88 and a Vance & hines exhaust. I am getting a popping and slight backfiring mainly on decelleration. I dont know if the fuel inj. was ever remapped and am Not familiar with this.. (always had carbs) can anyone tell me about it? ie: process, cost, time needed?? Thanks, Pat
     
  2. glider

    glider Veteran Member

    25,464
    108
    44
    Pat

    Even if the ECM was remapped by the dealer, it is still running lean for EPA compliance.

    Your best bet is to add a TFI and you will be able to adjust your FI just like a carb then.

    EFI - Electronic Fuel Injection Controllers - ATVs, UTVs, Motorcycles, Snowmobiles, Scooters, Sport Bikes, Watercraft

    Lots to read about it here and also Dobeck posts on this forum so just incase you needed help, they are here to help.

    Diagnostics and Fuel Injection Related - Harley Davidson Community

    TFI Questions Answered By Dobeck - Harley Davidson Community
     
  3. kabory

    kabory Member

    79
    18
    4
    I had the mapping done at the dealer, its a $150.00 download charge plus 1/2hr labor, I paid $197.00. I have a slight decel popping also. As I understand, popping is always there, just not real audible with stock pipes. The more free flowing aftermarkets make it more audible.
    I am going to have the dealer double ck it when it goes in for the 1000 mile check up later this month. With out service records, I am not sure how you can tell if your bike has had the download.
    Good luck, If I get anymore info from dealer after service, I will post it.
     
  4. glider

    glider Veteran Member

    25,464
    108
    44
    The dealer can check their computer using the VIN or hook up to the bike with the digital tech to determine if the mapping is stock or not.

    Sometimes decel pop can be caused by loose exhaust connections or a leak at the head pipe to cylinder connection. Check the header nuts for the proper torque.
     
  5. kabory

    kabory Member

    79
    18
    4
    cool, thanx for the info