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Thread: Open or closed loop idle

  1. #1
    Fuel Injected!
    Join Date
    Aug 2012

    Open or closed loop idle

    What have you had the most luck with? Open or closed idle. My 6395/454 is much more stable after start up in open loop. Even when first starting off the wide band is pretty stable and as soon as closed they fluctuate. Once the flag shows closed it appears to stay in closed whether I have the closed loop idle set or unset. I have looked at parameters that might force open idle but don't really see the ones that might be the right ones. Thoughts?
    6395, BHDF, 7.4 BBC lightly modded now 6395 BMHM back to BHDF

  2. #2
    Fuel Injected! PJG1173's Avatar
    Join Date
    Nov 2011
    Jacksonville NC
    both mine are open loop. one has way too much valve overlap for closed loop.
    87 4Runner, 15" spring lift, 3" body, chevy vortec 355, 5.29 gears, 38.5x15.5x15" Boggers, 280hr, 16168625 running $0D
    93 S10, 12" spring lift, 4.56 gears, F/R lockers, 36x12.5x15 TSL's, long tube headers, 266HR cam, p&p vortec heads, $0D Marine MPFI.
    05 Silverado, 2' lift, 4" exhaust, Bully Dog programmer,

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