Downpipe exhaust drone

Discussion in 'Mechanical Problems & Technical Chat' started by MadMike, Feb 4, 2017.

  1. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    Whats up everyone? I just installed a Full race catted downpipe last Sunday. I noticed the exhaust sound tends to drone when decelerating and really rice sounding when accelerating at certain speeds. Will a complete tune change the sound of the exhaust and probably mellow it out some?
     
  2. Sarcras
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    Sarcras Supporting Member

    Messages:
    422
    Location:
    North Dakota
    Vehicle Model:
    Civic Si
    Body Style:
    FB6
    I don't have one yet but from what I have read from other posts is, yes. After a tune and time the drone should subside.
     
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  3. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    That's what I'm hoping for. Just started tuning, So hopefully it does improve.
     
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  4. webby
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    webby Administrator

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    And others have said it has a bit of a break-in. It changes in sound (loudness) once you've had it for a while.
     
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  5. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    So after break in it will get louder or softer tone?
     
  6. webby
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    webby Administrator

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    I've seen people claim it gets quieter
     
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  7. r18-power

    r18-power Well-Known Member

    Messages:
    709
    Location:
    FL
    Vehicle Model:
    SI
    Body Style:
    Sedan
    It does get better after a while and the tune, what exhaust do you have?
     
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  8. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    I have Invidia Q300
     
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  9. r18-power

    r18-power Well-Known Member

    Messages:
    709
    Location:
    FL
    Vehicle Model:
    SI
    Body Style:
    Sedan
    I'm surprised you have drone with that exhaust I have a full race catback with their catted dp and I have 0 drone. Just give it some time
     
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  10. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    I'll just wait till I'm 100% tuned. See if that makes a difference. I guess I'm getting older an mind loud exhaust now. I remember I had B16a straight pipe no muffler and I could careless. Lol
     
  11. PainlessCandy

    PainlessCandy Well-Known Member

    Messages:
    221
    Location:
    Cleveland
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    I have the Full Race catted DP. When I first installed it I was worried it would be too loud. The break-in period is at least 500 miles, but you will notice it calm down significantly. The ricey noise went away after that long for me, the drone got quieter but never fully disappeared since I have it paired with a Skunk2 cat-back, but I love the sound of it. The tone will soften over time and become more round, less harsh, and a little less loud.

    Sent from my SAMSUNG-SM-N910A using Tapatalk
     
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  12. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    Thanks, that is good news to hear.
     
  13. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    Just a quick update on this issue. I found out why it sounded like it was droning. The downpipe pushed the exhaust a little further causing the muffler canister to be resting on the rear hanger. Now I have to figure how to address the problem.
     
  14. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    Has anyone had an issue with the Invidia q300 an a aftermarket downpipe doing this. Any suggestions how to address this issue?
     
  15. r18-power

    r18-power Well-Known Member

    Messages:
    709
    Location:
    FL
    Vehicle Model:
    SI
    Body Style:
    Sedan
    I had the same issue with my full race exhaust, the hasport rear and upper help as well as the torque solution exhaust hangers. I haven't had any issues since.
     
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  16. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    Did you change all the exhaust mounts to torque solutions?
     
  17. r18-power

    r18-power Well-Known Member

    Messages:
    709
    Location:
    FL
    Vehicle Model:
    SI
    Body Style:
    Sedan
    Yes I did
     
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  18. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    Ok, Thanks. I'll look into doing that.
     
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  19. PainlessCandy

    PainlessCandy Well-Known Member

    Messages:
    221
    Location:
    Cleveland
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    I had this same issue with my S2 catback. I wasn't sure where all it was hitting since it was also hitting that weird cross bar and rattling around on it, so I had my mechanic put it up on a lift. When he saw what was happening, he offered to take a torch to the mounting bracket and that piece and just bend them out of the way. Stuck a broom handle in the end of the tailpipe (not sure if you could do that with the q300) and just bent it down a few degrees til it was straight. He didn't even charge me for his time. Note: he just heated the hangar to customize the fit, not the pipe itself.

    Sent from my SAMSUNG-SM-N910A using Tapatalk
     
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  20. MadMike

    MadMike Active Member

    Messages:
    41
    Location:
    Inland Empire, California
    Vehicle Model:
    Civic SI
    Body Style:
    Sedan
    It's only hitting the rear hanger. So I'll see if bending it is possible. Thanks for the info.
     

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