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Thread: 2006 300C 5.7 with COMP 268 cam.

  1. #1
    Potential Tuner
    Join Date
    Mar 2020
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    4

    2006 300C 5.7 with COMP 268 cam.

    Good evening all,


    I am very green with using HPT and would greatly appreciate any help with this tune.

    The top end needed rebuilt when I bought it so I did like everyone else and swapped out the stock cam.

    I decided on a comp 268 as a lot of reviews stated the car would run without a tune.

    It has comp hi tech pushrods and valvesprings mopar MDS delete and 16 Hellcat lifters.

    Ebay CAI, long tube headers no cats with a true bendz 2.5 exhaust no mufflers or resonators.

    I cannot get the car to run long enough to log. it surges really bad and once in gear it dies.


    any help would be greatly appreciated. I do plan to enroll in some tuning classes but I would like to drive the car this year lol.
    Attached Files Attached Files

  2. #2
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    Join Date
    Mar 2020
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    So after reading 06300CSRT8 thread on NGC3 tuning starters guide I was able to get the car to idle long enough to log.

    Thank you 06300CSRT8 I printed out your guide and read it over and over as well as used it to build the tune I am currently using.

    The issue the car has now it that it will start perfectly fine and idle around 1000 rpm great for 1 minute 16 seconds then the car starts to surge and eventually stall.

    I'm not looking for a complete walk threw just some ideas on what to adjust. Below is my cam card for the cam installed as well as the log and tune installed.

    Specifications:
    Intake Valve Lift (in.)
    0.528
    Exhaust Valve Lift (in.)
    0.531
    RPM Range
    1500-5800
    Int. Duration @ .050 in. (Deg)
    216
    Exh. Duration @ .050 in. (Deg)
    220
    Int. Duration Advertised (Deg)
    268
    Exh. Duration Advertised (Deg)
    272
    Lifter Type
    Hydraulic Roller
    Usage
    Street/Performance
    Engine Make/Size
    Mopar 426 Hemi
    Advertised Duration
    268 int./272 exh.
    Advertised Exhaust Duration
    272
    Advertised Intake Duration
    268
    Basic Operating RPM Range
    1,500-5,800
    Cam Style
    Hydraulic roller tappet
    Computer-Controlled Compatible
    Yes
    Duration at 050 inch Lift
    216 int./220 exh.
    Exhaust Duration at 050 inch Lift
    220
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.531
    Grind Number
    269H-11
    Intake Duration at 050 inch Lift
    216
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.528
    Quantity
    Sold individually
    Valve Lift with Factory Rocker Arm Ratio
    0.528 int./0.531 exh.
    Valve Springs Required
    Yes
    Lobe Separation (Deg)
    113
    Manufacturer's Part Number:
    112-501-11

    Any help is greatly appreciated
    Attached Files Attached Files

  3. #3
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    Join Date
    Mar 2020
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    4
    Got the car drivable somewhat.

    At WOT what should the accelerator position D be?

    The max TPS% I see is 86.7% at WOT

    The car has a stock replacement throttle body on it.

  4. #4
    Potential Tuner
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    Mar 2020
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    4
    New Tune
    Attached Files Attached Files

  5. #5
    Advanced Tuner coanan's Avatar
    Join Date
    Mar 2009
    Location
    S. Florida
    Posts
    348
    Maybe some useful info here, 6.1
    Attached Files Attached Files
    13 Chrysler 300S, Stock 17 RAM 6.4 BGE with TSP Stage 4 boosted Cam, AIT 18% OD pulley, E-force 2.62 pulley(12.2 lbs boost),, Fastman 84+4 mm throttle body, 1 7/8 kooks long tubes w/hi-flow cats, 3" Magnaflow Cat-back, FTI 2800 stall, Trans by Hellraiser, Dings Racing valve body and tune, Getrag 3.73, Walbro 400LPH, DW 65# inj. aluminum rad. SRT fans. Brembo upgrade. Stage one MOPAR springs, XIX X39 22x9 +15 - 22x10.5 +22 with NITTO NT555 265/35R22 - 295/30R22

  6. #6
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    Join Date
    Nov 2013
    Location
    PUERTO RICO
    Posts
    8
    Sorry for my english i am puerto rican.

    I see your log and the first thing you have to fix the fuel trims beacause is too high numbers.

    If you are in open headers you have to close as soon as posible beacause the o2 signals is not be right and is adding too much fuel.

    In your log i don't see the oxygen sensors working the most important is the b1s1 & b2s1