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Thread: help! rich at idle

  1. #1
    Senior Member
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    Aug 2008
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    Default help! rich at idle

    just installed a maggie sc mp112 then calabrated the ifr(b4001) for 42lbs/hr green tops @43.5 psi fuel pressure with 58 psi fuel rail pressure (std injectors supplied with sc)using injector calculator by red hot supra
    full flash new cos3 (01290003)last one was (12225074) then cal flashed the last specs of previous tune followed cos tutoral and ended up with 9.89afr at idle ???

    ls1, heads, exhaust, intake, maggie sc, 3.91
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  2. #2
    Lifetime Member mr.prick's Avatar
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    Default

    if you are idling in the 50-60 kPa range, you might want to lower those values.
    they are quite high especially for cold start/open loop.
    not to hurt your feeling but, your VE table is "erratic" in some spots.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
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  3. #3
    Senior Member
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    yer i thought it was a bit out of place mr prick,i kept on auto ve using bens but this recient log shows bens at 34.0-36.0 something is way out i can see the fuel leaving the end of the exhaust pipe...im thinking of reducing min pulse widths to 1.13 ive search the forum for related problems and found ifr values to be the culprit ill also min and defult pulse width to also affect for richness in idle?
    Last edited by drdarthinvader; December 13th, 2008 at 02:02 PM.

  4. #4
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    all apologies i found the problem "me" as a result of lack of concetration or retarditus i failed to modify the new rpm vs kpa b3647 through not following the tutoral sorry my mistake ..on the positive side revised a lot on injecters which made dialing easy for the green tops or bosch 42lbs
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