Page 1 of 2 12 LastLast
Results 1 to 10 of 18

Thread: Effects of changing B0120?

  1. #1
    Lifetime Member SSpdDmon's Avatar
    Join Date
    Jun 2005
    Posts
    1,558

    Default Effects of changing B0120?

    Was looking at a tune done on my dad's Magnacharged C5. The tuner set B0120 to 400rpm. Doesn't this essentially eliminate the VE? If so, why isn't this a common practice. Then all we would have to do is set the injector tables and dial in the MAF & PE tables to adjust fueling, right? Or is this just something ideal for forced induction cars?

  2. #2
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    If MAF fails then there would be no failover for airmass.

  3. #3
    Lifetime Member SSpdDmon's Avatar
    Join Date
    Jun 2005
    Posts
    1,558

    Default

    Granted, you're taking a gamble on a MAF failure. But, how often does that really happen?

  4. #4
    Lifetime Member TAQuickness's Avatar
    Join Date
    Jan 2005
    Posts
    2,940

    Default

    Actually, I think if you set P0102 you will fall into SD .

    Otherwise, we would have no action above 4k


  5. #5
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    ok, that's right... I knew that...

    lol... my previous post was too early , caffeine hadn't spooled up yet... ...earh... "I was testing you"

    I still think it would run just fine on all MAF regardless of NA/FI.

  6. #6
    Lifetime Member SSpdDmon's Avatar
    Join Date
    Jun 2005
    Posts
    1,558

    Default

    I'm half tempted to try it on my h/c setup...

  7. #7
    Lifetime Member TAQuickness's Avatar
    Join Date
    Jan 2005
    Posts
    2,940

    Default

    shouldn't hurt. I would think you induce more drivability issues in the low (0-3k rpm) area. mass flow sensors like a nice steady flow.


  8. #8
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    You're right, MAF's like steady flow.

    A screened MAF probably has a steady flow, especially if used with the stock F-body baffled lid.

    I think I might experiment with it.

  9. #9
    New Member
    Join Date
    Aug 2006
    Posts
    8

    Default

    been playing with a MAF tune for a couple of days now, takes a bit to get frequency-g/s dialed with your fuel trims, havent had any problems, car runs good, 2002 ss, 8 psi procharger are my only engine mods for now...

  10. #10
    New Member
    Join Date
    Aug 2006
    Posts
    8

    Default

    and yes, still have screen in MAF sensor

Page 1 of 2 12 LastLast

Similar Threads

  1. RPM Threshold for Airflow Calc {B0120}:
    By Mark300 in forum E37, E38 & E67 PFI ECM's
    Replies: 3
    Last Post: December 2nd, 2009, 01:40 PM
  2. Replies: 12
    Last Post: December 13th, 2007, 11:52 AM
  3. Side effects
    By SSpdDmon in forum General (Petrol, Gas, Ethanol)
    Replies: 8
    Last Post: May 21st, 2007, 01:25 PM
  4. B0120 ?
    By DrX in forum General (Petrol, Gas, Ethanol)
    Replies: 4
    Last Post: October 24th, 2006, 03:05 AM
  5. {b0120} Question
    By driver456 in forum General (Petrol, Gas, Ethanol)
    Replies: 4
    Last Post: May 19th, 2006, 11:53 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •