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Thread: Question on Hp tuners DFCO / CFCO 2016 camaro 2SS M6. Need more burble / pops on dece

  1. #1
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    Question on Hp tuners DFCO / CFCO 2016 camaro 2SS M6. Need more burble / pops on dece

    Not getting much crackle/pop/burble on decel/shift on my 2016 FBO e85 M6. I know DFCO/CFCO are enabled from the factory, so i tried to disable fuel cut in HP Tuners VCM editor. I don't notice a difference, did i do this properly? (note i have the tune backed up, tested one change at a time. ) My car is Pray Performance tuned and absolutely rips, im just looking to tweak and get some hands on experience . not touching anything spark/fuel table related.
    Also does anyone have a vcm scanner layout setup with all the preferred channels and inputs? Please link or post. Thanks!

    For vcm editor pic : https://r.tapatalk.com/shareLink?url=https%3A%2F%2Fwww%2Ecamaro5%2Ecom%2F forums%2Fshowthread%2Ephp%3Ft%3D550064&share_tid=5 50064&share_fid=10351&share_type=t

    Sent from my SM-G955U using Tapatalk

  2. #2
    Senior Tuner Higgs Boson's Avatar
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    decel spark and valve timing

  3. #3
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    Reduce the timing in the Minimum Spark Base and Long Term to 5 degrees in the .04, .08 and .12 rows where you want the pops on decel. 5 degrees of timing will make the popping rather aggressive so you can increase the timing values from there to fine tune how much you want.
    I've tuned a few things...

  4. #4
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    do you smooth that graph after you make those adjustments

  5. #5
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    No do not smooth. You should never reach .04, .08 or .12 rows accept on moderate to hard deceleration. Smoothing the .16 and higher rows into the .12 and lower rows will negatively affect drivability.
    I've tuned a few things...

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    Did you ever get the results you wanted ? Can you PM me OP

  7. #7
    Quote Originally Posted by Higgs Boson View Post
    decel spark and valve timing
    Where are these?

  8. #8
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    Quote Originally Posted by nicul15 View Post
    Where are these?
    These aren't tables in HPTuners. He was referring to the Engine Operating logic.
    I've tuned a few things...

  9. #9
    Senior Tuner Higgs Boson's Avatar
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    technically, they are in the tables, they just don't look the same as they did with GenIV stuff.

    Min Spark timing set to 5-10 or so in the decel rows in the RPMs you want it to pop.
    and disable DFCO

    if you still have a variable cam you can retard it in the decel rows.

  10. #10
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    Quote Originally Posted by Higgs Boson View Post
    technically, they are in the tables, they just don't look the same as they did with GenIV stuff.

    Min Spark timing set to 5-10 or so in the decel rows in the RPMs you want it to pop.
    and disable DFCO

    if you still have a variable cam you can retard it in the decel rows.
    I left DFCO enabled and it crackles as it enters DFCO which is perfect. When the car is cold and DFCO is disabled it pops and bangs forever which is really annoying. I would think that disabling DFCO and making the car pop and bang real hard would heat up the cats and destroy them. Yes, I agree the tables are there sorta. I posted how to make the pops and bags show up, remember? lol

    My cam retards 5 degrees and I have 5 degrees of timing in the min spark tables where I want the pops on decel. This will get you the crackles people are looking for.
    I've tuned a few things...

  11. #11
    Senior Tuner Higgs Boson's Avatar
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    yes you can set it up however you want to. not sure what cats are, never heard of em.

  12. #12
    The Cam retard is what was missing. I had changed it to 0 in those areas a while back. Thanks guys

  13. #13
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    Quote Originally Posted by nicul15 View Post
    The Cam retard is what was missing. I had changed it to 0 in those areas a while back. Thanks guys
    Datalog and look, some cars will still retard the cam on decel even if you have 0 in the low-mid-high tables.
    I've tuned a few things...

  14. #14
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    Quote Originally Posted by TriPinTaZ View Post
    Datalog and look, some cars will still retard the cam on decel even if you have 0 in the low-mid-high tables.
    Are you reffering to these tables? And make them A negatvie value in the decel areas?

    Screen Shot 2019-04-14 at 1.39.23 AM.png

  15. #15
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    Quote Originally Posted by J_menis View Post
    Are you reffering to these tables? And make them A negatvie value in the decel areas?

    Screen Shot 2019-04-14 at 1.39.23 AM.png
    no, I've said which tables in my first post in this thread.
    I've tuned a few things...

  16. #16
    yeah im running -3 in 1000rpm 0 1200 and 5 in the next one with 5* in the cam timing and its back.

  17. #17
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    Quote Originally Posted by nicul15 View Post
    yeah im running -3 in 1000rpm 0 1200 and 5 in the next one with 5* in the cam timing and its back.
    Can you screenshot what you?re talking about lol. I have the pops I want but I?m looking to see what else I can play with.

  18. #18
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    table.jpg

    is this the table you guys are talking about?

  19. #19
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    Engine>Spark>Minimum Spark> Base and Long Term (Both tables)

    Change 0.04 to 0.12 airmass rows by 1400 to 2800 columns to 5.00.

    Completely disable DFCO and test. Go higher or lower in the RPM to suit your needs.

    Go higher with the number to make less aggressive pops.

    Don't go over 0.12 airmass rows.

    Let us know if it works out.

  20. #20
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    Annotation 2019-09-18 161629.jpg

    so i dont have a Minimum spark table. Am i changing the High octane and Low octane tables instead?