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Thread: Jeep WK 5.7 Hemi 2005 NGC3 268Compcam + K&N Tune

  1. #1
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    Jeep WK 5.7 Hemi 2005 NGC3 268Compcam + K&N Tune

    Hi!
    I've rebuilt my Jeep heads with new springs, polished intake, exhaust. Added 268H-13 Comp Cam, and K&N CAI.
    I've uploaded stock tune, and started to make some modifications, but for sure nothing spectacular effects yet.

    If someone could lead me to proper path.
    I've changed part Throttle advance - partial +2
    WOT +3 below 1152RPM, and +0,5 after.
    TQ Management - Shift TqRed Time = 0.

    VCM Scanner - readings from my PCM are really pain in the ass. Refreshing time is about 5 sec. No Knock sensor readings. :/

    FA stoich ratio is set to 14.4:1 (0,0694) by factory. It's kind to much for me. Also Enrichment map starts from 0,08 (0,0694+0,0106) to 0,088 what is equal to 11:34:1.
    What you suggest to focus on?

    oryginaly.hpt
    4 - WOT.hpt
    4 - WOT.hpl
    Last edited by Pablito[PL]; 12-10-2018 at 02:47 AM.

  2. #2
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    So i've made a next step.
    After little spark advance adjustment i 4 - WOT.hpt. I've started with VE adjustment. During the readings STFT average was aroung 5% so even without tuning was almost perfect. Of course, MDS, and all suppoted corrections were disabled.
    Now i have adjusted VE map by approx 2%.

    5 - VE means after adjustments.
    If i got such low short trims, should i continue with spark advance?

  3. #3
    looks nearly same as mine

  4. #4
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    Quote Originally Posted by benjohns View Post
    looks nearly same as mine
    I've made a step back, and now i'm testing map below.
    Stoich has been changed to 0,068 (14.7), and WOT enrichment until 4160 rpm is 0,012, what should gave me 12,5:1.
    Past this rpm fluently rising to 0,017, whats giving me 11,7:1. In this area of high rpm i'm affraid of slow flame propagation accordingly to high spark advance, so i've made it a little richer.
    If i'm doing something wrong, please let me know.

    5 - WOT 1 - zmieniony stoich (nie testowany)-.hpt

  5. #5
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    Can someone please explain me, why does my 2005 NGC3 has so slow data readings?

    5 - WOT - zmieniony stoich testowany.hpl
    Last edited by Pablito[PL]; 1 Week Ago at 05:54 PM.

  6. #6
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    Progress

    i've made a little progress.
    Changed Power enrichment in WOT to 12:3 in whole area (for tests).
    Finally i have reached 14.6s on quarter mile.
    Have problems with start beacuse of slippy road (wet).
    Maybe in dry conditions results could drop to 14.3-14.4.

    Finnaly made a progress. It seems that AFR was to rich before.

    6 - testy - obroty i power enrichment 3.hpt