Boost fluxuating, data log
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This is a discussion on Boost fluxuating, data log within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Please check out my datalog from my AccessPort. When at WOT my boost fluxuates. It over boosts to over 18 ...

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    Supporting Member yamaha_rider619's Avatar
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    Boost fluxuating, data log

    Please check out my datalog from my AccessPort.

    When at WOT my boost fluxuates. It over boosts to over 18 psi. I should be close to 16psi, because i am at stage 2. I have a catless tbe, catless up-pipe, ebay turbo inlet, and thats all that should have to do with the engine.

    You can see the fluxuating at 3, 5, and 6.5 seconds.
    Attached Files
    Last edited by yamaha_rider619; 08-16-2010 at 11:44 PM.
    Josh
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    UnBanned Sinister's Avatar
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    Wastegate duty is all over the place...

    What stage 2 tune is this?
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    Supporting Member yamaha_rider619's Avatar
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    Stage 2 91 v130, 91 octane Cobb ap stage 2 map
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    Quote Originally Posted by yamaha_rider619 View Post
    Stage 2 91 v130, 91 octane Cobb ap stage 2 map
    are you able to log some different stuff?

    KC (Knock Correction) WGDC (Wastegate Duty Cycle... not percentage), IAM (Ignition Advance Multiplier), RPM (of course), MAF Voltage, and Boost.
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    Supporting Member yamaha_rider619's Avatar
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    Probably, I'm not sure how to though. I went to each name under log data and it gave me he same parameters every log.
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    UnBanned Sinister's Avatar
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    also IDC (Injector Duty Cycle) wouldn't be a bad idea. I highly doubt you're maxing out your injectors... but if your IDC is steady, and the boost is going up and down... that's a problem.
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    Supporting Member yamaha_rider619's Avatar
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    What would that problem mean?
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    Quote Originally Posted by yamaha_rider619 View Post
    What would that problem mean?
    that you'd be having temporary either rich or lean conditions. lets come to that bridge when we see a more complete log
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    UnBanned Sinister's Avatar
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    also do a learning view
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    Supporting Member yamaha_rider619's Avatar
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    Whats a learning view?
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    Supporting Member yamaha_rider619's Avatar
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    Also that's the only wgd option I get. There also is no knock correction option.
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    http://lmgtfy.com/?q=learning+view&l=1


    click the first google result and read that thread
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    Supporting Member yamaha_rider619's Avatar
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    I don't have a obd to USB cable that will plug into my laptop. Remember my ap cable is different...
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    Quote Originally Posted by yamaha_rider619 View Post
    I don't have a obd to USB cable that will plug into my laptop. Remember my ap cable is different...
    u can use mine
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    Supporting Member yamaha_rider619's Avatar
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    Alright well I will do the other log tomorrow and post it. I hope it's nothing serious!
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