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Fire sound from exhaust

Discussion in 'The Malaysian Skyline Club' started by NeniNeniBoBo, Dec 18, 2009.

  1. owtaman

    owtaman Senior Member
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    I am facing the same problem, can I simply lower the fuel pressure to fix this if I don't bother to re-tune the ECU ? Would it break anything ?
     
  2. shark79

    shark79 Senior Member
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    What you are trying to do is more of a trial&error method which can be very costly ...try installing a wideband commander with new o2 sensors..to get better and improved reading on th air/fuel ratio....Over time o2 sensor deteriorates.
     
  3. owtaman

    owtaman Senior Member
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    When O2 sensor deteriorates, does it show richer or leaner as compare to actual value ? or just slower in response time ? I got a K&N AF ratio meter that does not work very well after migrated from another car.
     
  4. shark79

    shark79 Senior Member
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    one of it poor fuel consumption...the readings can be too rich or too lean.
     
    #24 shark79, Mar 20, 2010
    Last edited: Mar 22, 2010
  5. NISMO S-TUNE

    NISMO S-TUNE 5 Year | Silver

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    The sound is okay as it shown that your engine is getting enough of fuel and its not "dry" as it will hurt the engine parts! So, you can ask your tuner to tune down a little and can be done in a minute!
     
  6. RB4840

    RB4840 Senior Member
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    hello, i also facing the same prob.with my rb 25 the pop sound normally came when i shift gear but only when i floor lah but i think my fuel managmet was not enought to control.currently iam using evo 510cc injector and safc to control.my boast level is set at 1 bar and using s256 bulleye power. to all sifu any suggestion or comment to eleminate problem.do the pop sound will damaged anything
     
  7. V-Spec

    V-Spec Senior Member
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    SAFC mapping too small at 8X8. Change to a Power FC with 20X20 mapping for more minute tuning. :P
     
  8. RB4840

    RB4840 Senior Member
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    tq v spec looking fwd to install standalone ecu still doing research to buy ems that suit my budget
     
  9. cutebomb86

    cutebomb86 Senior Member
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    erm... i have problem with aftermarket ecu.
    when i plug it in, everything works fine. the problem is when i turn off and take away my keys, the engine is still working, until i remove the ecu then the engine stop works.
    anyone can explain what's going on and is there any solution to solve this problem?
     

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