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Thread: why my mufflers are different?

  1. #1
    Mr Bear Guest

    Default why my mufflers are different?

    Hi
    I have Road King FLHRSI MY '05

    I have:
    Muffler: Supertrapp Megaphone Slip-On with 15 Discs (# 728-78054)
    Stage1: Screamin' Eagle® Stage I Kit for EFI Models*(# 29773-02B)

    then I used SERT with this MAP: 127LF004-C0.MT6

    Calibration #8: 2004 – 2005 Touring , 2001 – 2003 FLSTSi and 2005 FLSTSCi
    Configuration: 1450 SE A/C and Mufflers
    File Name: 105LF003-D0.MT6, 127LF004-B0.MT6
    Components:
    • SE Air Cleaner and Breather Kit P/N 29440-99B
    • SE Performance Touring Mufflers P/N 65115-98B or 65116-98A

    Now I have Decel Popping and as you can see a muffler Brown\gold (high temp?) and the other is NEW!
    If You can see (I have 15 discs) left seems new (I use these mufflers for 4000Kms) but right semme burned

    What do you think about?
    I have 15 disk on the left and 15 on the right it's ok? I read a lot of configuration with a differente disc number on the left and on the right...

    Thanks

    Nicola


  2. #2
    bschultz Guest

    Default

    The "GOLD" is the normal color stainless steel turns when heated to exhaust temperatures. With stock (OEM) crossover headpipes the majority of the exhaust exits the right side, hence your inconsistency in discoloration and our tuning recommendations.
    Popping on decel usually is an indication of running lean.
    I would first try reducing the number of discs on the left to 7-8 discs. If the popping persists, continue tuning with the right side.

  3. #3
    Mr Bear Guest

    Default

    Quote Originally Posted by bschultz View Post
    I would first try reducing the number of discs on the left to 7-8 discs. If the popping persists, continue tuning with the right side.
    Thanks!
    Now I'll try with 8 discs on the left and 15 on the right.

    Nicola

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