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Thread: Need help! Will not do a burnout.

  1. #1
    Tuner in Training
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    Need help! Will not do a burnout.

    Car will not do a burnout when braking. It runs like a dog with its tail on fire when you lay into it on the highway.

    Here is a short scan and the bin attached. The timing goes to 0 when the TPS hits 100% when power braking to do a burnout.

    Im new to hptuners. The PE at WOT is a little rich and the VE table needs tuning at part throttle because its rich as hell at cruise speed.

    Thanks
    Attached Files Attached Files

  2. #2
    Senior Tuner mowton's Avatar
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    Set Power Hop Injector disable table to all 255's.

    Ed M
    2004 Vette Coupe, LS2, MN6, Vararam, ARH/CATs, Ti's, 4:10, Trickflow 215, 30# SVO, Vette Doctors Cam, Fast 90/90, DD McLeod, DTE Brace, Hurst shifter, Bilsteins etc. 480/430

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  3. #3
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    Quote Originally Posted by mowton View Post
    Set Power Hop Injector disable table to all 255's.

    Ed M
    Thanks, I will give this a try. Just wondering why it killed timing and not the injectors like it says it should do. The car hauls ass stabbing it from a 10mph roll.

    It is a 6.0, with a 234/238 112+4 Futral Cam, with AI 226 heads, Built 4L60e with a PTC 3600 stall. FAST 36lb injectors, Delphi 85mm MAF.

  4. #4
    Senior Tuner mowton's Avatar
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    Would also increase the trans input and output max levels in Torque Management section.

    Ed M
    2004 Vette Coupe, LS2, MN6, Vararam, ARH/CATs, Ti's, 4:10, Trickflow 215, 30# SVO, Vette Doctors Cam, Fast 90/90, DD McLeod, DTE Brace, Hurst shifter, Bilsteins etc. 480/430

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  5. #5
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    You can also disable torque management entirely if you don't care about traction control
    2001 Z06 : 856/830 : Built LQ9 403ci : D1SC 17psi : Self-built , self-tuned.

  6. #6
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    Quote Originally Posted by nkautz View Post
    You can also disable torque management entirely if you don't care about traction control
    Thanks. Well i input 255 into Power-Hop and increased the Trans input torque. This had no effect. Still the same poblem. I push TCS off via the switch infront of the shifter. This is aggravating because the car has alot of power.

    Thanks guys

  7. #7
    Senior Tuner mowton's Avatar
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    Quote Originally Posted by lsxjunkie View Post
    Thanks. Well i input 255 into Power-Hop and increased the Trans input torque. This had no effect. Still the same poblem. I push TCS off via the switch infront of the shifter. This is aggravating because the car has alot of power.

    Thanks guys
    Do you mean the ASR, never thought to ask if you had that option. Even when off, you cant spin the tires?

    Ed M
    2004 Vette Coupe, LS2, MN6, Vararam, ARH/CATs, Ti's, 4:10, Trickflow 215, 30# SVO, Vette Doctors Cam, Fast 90/90, DD McLeod, DTE Brace, Hurst shifter, Bilsteins etc. 480/430

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  8. #8
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    Quote Originally Posted by mowton View Post
    Do you mean the ASR, never thought to ask if you had that option. Even when off, you cant spin the tires?

    Ed M
    Yea its a 02 WS6. TCS off and its stalls to 1800rpm and then leaves like a slug but comes alive about 40 feet out.

  9. #9
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    Take a look at the torque management settings on this repository tune:
    Attached Files Attached Files
    2001 Z06 : 856/830 : Built LQ9 403ci : D1SC 17psi : Self-built , self-tuned.

  10. #10
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    Instead of just trying to copy some sort of maxed out torque teduction, you should set the scanner up to help you see whats going on. You can see that the car has 0º of timing when you are trying to go, but the tune has 12-14º commanded . The F-body PCM doesn't allow you to log too many things at once, so go into the scanner config you have running and remove all items from your Scan Table Primary- pretty much everything on the right side besides Cylinder Airmass should get you enough head room to add in pretty much every item from PID list/Engine/Advance. Its also a good idea under Engine/ Retard to add the Burst knock value as well. If you add each of thoughs items to your table and do exactly what you did in this log - one or more will have a negative number. That number will point you to where the timing removal is coming from - its probably TQ management - but be silly if it ended up being something else =) Added 2 photos to help visualize the scanner. GL

    Doc
    Counts Kustoms / VPT
    Las Vegas - NV

    unknown timing config.jpg Wont burnout 1.jpg

  11. #11
    Tuner POWERZONE's Avatar
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    Look at your log and look at your MAF(lb/min) thats not right for 100% TPS.

    100% TPS, 102KPA, and 12lb/min MAF is a problem.

    Your TPS is off, looks like your idling at 1% or something is going on with your TB. Your commanding 100% TPS and your rpm is not even increasing. Or maybe a TPS issue.

    Is this a "ported TB"?

    The tq management is not helping. A quick check is to delete all torque management and see if it is still doing it.
    Last edited by POWERZONE; 02-10-2015 at 08:33 AM.
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  12. #12
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    Try checking the Brake Torque Management tab...Ive found a few tunes with the same problem and they forgot to fix this table.

  13. #13
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    Quote Originally Posted by POWERZONE View Post
    Look at your log and look at your MAF(lb/min) thats not right for 100% TPS.

    100% TPS, 102KPA, and 12lb/min MAF is a problem.

    Your TPS is off, looks like your idling at 1% or something is going on with your TB. Your commanding 100% TPS and your rpm is not even increasing. Or maybe a TPS issue.

    Is this a "ported TB"?

    The tq management is not helping. A quick check is to delete all torque management and see if it is still doing it.
    Stock unported Fbody TB and a Delphi 85mm MAF with screen. I am going to try to see what I can do this weekend. This is my brothers car that I put the motor together for. And that 100% TPS should be accurate as I was flooring it just to see how high the rpm would rise too.
    Last edited by lsxjunkie; 02-10-2015 at 08:14 PM.