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Thread: noob needs help with ve tables

  1. #1
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    Default noob needs help with ve tables

    right folks i've read a few threads and i'm getting confused.

    i have a 99 camaro ls1 engine and pcm trasnplant. i have turned off vats and a few other non required items and am now trying to tune the engine.

    as it is a 99 camaro it was suggested i copy the 04 holden clubsport ls1 ve table as it was a more powerful tune due to better fuel etc. having compared the two the holden map looks more aggressive and a better starting point for my requirements.

    when working with the main ve table however parts of the full load high rpm map are over 100. my understanding of this table is the 100 represents atmospheric pressure and therefore anything above a bar ( or 100 on the table ) is positive pressure or boost.

    am i right or am i being dumb.

    p.s. i'm used to tuning turbo'd jap 4 pots, this v8 lark is all new

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    bump up

  3. #3
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
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    Kieran:

    Are you boosted, or N/A?

    Not sure where you are going with your question. Normally the VE Tables along with the MAF Tables are representing the Airflow Values in an engine.

    Perhaps tells us your exact engine specifications along with any engine modifications. Are you MAF-Enabled? Closed-Loop or Open?
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


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    Quote Originally Posted by WeathermanShawn View Post
    Kieran:

    Are you boosted, or N/A?

    Not sure where you are going with your question. Normally the VE Tables along with the MAF Tables are representing the Airflow Values in an engine.

    Perhaps tells us your exact engine specifications along with any engine modifications. Are you MAF-Enabled? Closed-Loop or Open?
    essentially it's a stock ls1 with stock tune. still na. i just can;t understand why parts of the ve table are greater than 100?

  5. #5
    Joe (Moderator) joecar's Avatar
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    Post some .tun and .log files.

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    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
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    I'm still not clear exactly what you are asking..but for a vehicle at sea-level, atmospheric pressure is ~101.2 kPa. With a strong high pressure you could hit 105 kPa.

    The VE Table you are describing would be normal for a N/A vehicle...
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


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    thats kinda what i'm asking. is over 100kpa normal. and your saying it is so coolio

  9. #9
    Joe (Moderator) joecar's Avatar
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    There is no explanation for that... a VE table that models the physical hardware does not look like that.

    You can get VE slightly greater than 100% near peak torque in some cases... if you tune and match the intake, heads/cam, headers.

  10. #10
    R.I.P Shawn, 1956-2011 WeathermanShawn's Avatar
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    I was not sure if the OP was talking about the MAP Axis of 100-105 kPa being 'normal' or the actual VE Table values..

    I agree, the actual VE Table values look suspect.

    Perhaps the OP can elaborate a little more..
    2002 Black Camaro Z-28 M6 Hardtop 11.0:1CR 425HP/410TQ SAE (400TQ@3500RPM)
    200cc Heads, 228/232 110+2 Cam, 1 3/4" LT's w/catts, GMMG, Koni Shocks, Hotchkis Springs, 35/21 Sways, 17" ZR1's, 3.90 Gears Roadrunner PCM LM-2 Serial Wideband
    EFILive Closed-Loop MAF/SD Hybrid Tune..


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