Si No more backfire after Flashpro!

  1. SiCKvic98

    SiCKvic98 Member

    Joined:
    Jun 15, 2018
    Posts:
    14
    Thanked:
    6
    Location:
    Brampton, ON
    First Name:
    Chris
    Car(s):
    '18 Si Sedan
    Hey,

    So I got a muffler delete maybe 3 days after getting the car last May and I loved the little pops between shifts. I got a catless downpipe this January and that just made everything louder and more fun. After reading a bunch of forums, ppl have said that turning off rev hang with a catless dp will make the exhaust pop more. Last Thursday I bought a flashpro, installed the +6 psi tune, turned off rev hang, and now I have no backfire!! Only while the car is warming up do I get some pops. Anyone else have this problem? Any insight?
     
  2. LightX

    LightX Senior Member

    Joined:
    Jul 21, 2018
    Posts:
    139
    Thanked:
    68
    Location:
    California
    First Name:
    Andrew
    Car(s):
    2018 Civic Hatchback Sport
    Got a catted downpipe. In my experience, backfire, or "gunshot" I'd call it, happens occasionally. I've been at a 50/50 when I shift above 3000 rpm. When I shift, I step on gas a little bit more(like a blip-ish) and let go of clutch to engage, it does a gunshot or loud bang.
     
  3. OP
    OP
    SiCKvic98

    SiCKvic98 Member

    Joined:
    Jun 15, 2018
    Posts:
    14
    Thanked:
    6
    Location:
    Brampton, ON
    First Name:
    Chris
    Car(s):
    '18 Si Sedan
    That happens to me every once in a while too but I preferred the sound before. It was a couple of nice pops between shifts EVERY shift
     
  4. 360glitch

    360glitch Moderator
    Moderator

    Joined:
    Feb 15, 2017
    Posts:
    3,749
    Thanked:
    3,612
    Location:
    USA
    Car(s):
    2017 Civic Si Sedan
    No backfire means your car is now running properly.

    Eliminating rev hang means less fuel is going to your engine after releasing the accelerator pedal.
     
    bangminah thanked this.
  5. PowerPerLiter

    PowerPerLiter Specific Output

    Joined:
    Jun 6, 2018
    Posts:
    1,019
    Thanked:
    755
    Location:
    Midwest
    Car(s):
    91 Talon TSI AWD 6262 280's N20 and 87 Buick Regal T 6776bb built N20
    It's because the calibration is closer to ideal
     
  6. LightX

    LightX Senior Member

    Joined:
    Jul 21, 2018
    Posts:
    139
    Thanked:
    68
    Location:
    California
    First Name:
    Andrew
    Car(s):
    2018 Civic Hatchback Sport
    Shift at 1500-1800rpm, exhaust gurgles with pops, with or without rev-hang.
     
    RonSwanson's thanked this.
Loading...

Share This Page

Loading...