5.3L SHORTY INTAKE - CHECK ENGINE LIGHT ON NOW

Discussion in 'Engine & Performance' started by LAIDON24S, Oct 14, 2016.

Sponsored By: Black Bear Performance
  1. LAIDON24S

    LAIDON24S LAYING FRAME ON 24s

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    I installed a short intake on my 2005 chevy silverado 1500 5.3L V8, the intake is a K&N straight out the front of the throttle body.

    the set up goes throttle body - mass air flow sensor - k&N filter

    now my codes are popping up for P0171 Bank 1 Lean and P0174 Bank 2 Lean.

    I do have a Bully Dog programmer that is set to performance for the motor and also have a throttle body spacer. that is all the upgrades I have.

    has anyone else had this issue or can help me out?

    ENGINE INTAKE.jpg
     
    Last edited: Oct 14, 2016
  2. barrrf

    barrrf Website QC

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    You need a mafless tune yo
     
  3. LAIDON24S

    LAIDON24S LAYING FRAME ON 24s

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    what is a Mafless tune? you mean tune the motor to run with out a Mass air flow sensor or do you mean I need to tune the truck computer?

    thanks for any info.
     
  4. bobfig

    bobfig GMFS Member

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    not enough tube for maf sensor to get a good reading.

    he is talking about a speed density tune. nothing the pos bulldog tuner is going to do.
     
  5. LAIDON24S

    LAIDON24S LAYING FRAME ON 24s

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    ok, so the MAF needs more space from the throttle body. or get a tune. FML.

    would you suggest a different tuner/programmer since you say Bully dog is a POS?
     
  6. bobfig

    bobfig GMFS Member

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    only thing would be a efi live autocal and do data logging. email the log and have the tuner send you a tune to put on. goes back and forth till everything checks out.

    normally blackbear is a good one
     
  7. 11MPG

    11MPG GMFS Member

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    I 2nd contacting Blackbear
     
  8. plato442

    plato442 nearly stock...

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    Or run a longer intake tube
     
  9. LAIDON24S

    LAIDON24S LAYING FRAME ON 24s

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    Seems that the code popping up is bank 1 lean p0171 and bank 2 lean p0174. Put a new MAF on and had to replace the battery because it stopped holding a charge. I will be replacing the O2 sensor and see if that fixs the problem. Also put old intake long tube back on to make sure that wasnt prob
     
  10. kids-at-711

    kids-at-711 Sexually identifies as a shopping cart.

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    :lol2: The o2 is NOT the problem. They are doing their job.
     
  11. LAIDON24S

    LAIDON24S LAYING FRAME ON 24s

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    WOULD YOU CARE TO ELABORATE?
     
  12. kids-at-711

    kids-at-711 Sexually identifies as a shopping cart.

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    The o2's are reading lean, which means too much air/too little fuel. Its probably being thrown off due to where the MAF is.

    EDIT: Because its reading both banks lean, the whole engine is affected.
     
  13. BoltspeedMen

    BoltspeedMen GMFS Member

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    And how would a filter break both 02s at the same time?

    Get some tubs and put a tube back in there. And still get a real tune, those handhelds are just as useless as you throttle body spacer.

    Try cleaning the maf, K&N is notorious for over oiling there's filters and dirtying up a MAF.
     
  14. bobfig

    bobfig GMFS Member

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    if the MAF -Mass air flow sensor cant read a good number it will throw off the fuel trim and cause the engine to run lean. mainly the reason that the older filters had the screen in front of the sensor was to get a good calibration.
     
  15. LAIDON24S

    LAIDON24S LAYING FRAME ON 24s

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    ok, so update. after a month of running codes, changing out all O2 sensors, replacing the MAF and putting the intake back on the way it was before.

    I found that behind the upper intake in the back is an air vent that used to go to the stock Break Booster, I had removed that hose during the Hydroboost conversion and put a plug on the back vent hole as a block.

    well that tube plug had ripped and fallen off. so after spending over $170 in new parts it all came down to a $5 rubber grommet to block the back air intake vent hole and the shorty filter worked perfect with no computer issues or remaping needed.
     
  16. kids-at-711

    kids-at-711 Sexually identifies as a shopping cart.

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    I dont find this at all surprising.
     
  17. LAIDON24S

    LAIDON24S LAYING FRAME ON 24s

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    what is not surprising?
     
  18. kids-at-711

    kids-at-711 Sexually identifies as a shopping cart.

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    The fact that it was some dumb little thing that caused such an issue.
     
  19. LAIDON24S

    LAIDON24S LAYING FRAME ON 24s

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    oh lord let me tell you, It was one of those moments where, after building this whole truck from ground up, I couldnt believe I missed this one air leak. fml
     
  20. kids-at-711

    kids-at-711 Sexually identifies as a shopping cart.

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    It happens. Thats a vacuum port btw. thats why you were reading lean.
     

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