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  1. #1
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    Cold Weather Power

    The temperature is dropping nicely here in Toronto and fall turbo weather is settling in. Outside air temp was 16C or 60F this evening so I thought I would test out the power and the nifty little virtual dyno tool.

    The following pull was done on JB4 map 3 with 45 meth add and 90/10 meth mixture (car is FBO). Boost is only 15psi and bang on target, I have never felt the car pull this hard before.

    She is an absolute monster with a lot more left in her. Wastegate duty cycle is negligible and ignition looks very nice (post shift will be the true test) for a flat 3rd gear long pull.

    JB4 Log
    Click here to enlarge

    Virtual Dyno Chart
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    Next up, 55 meth add Click here to enlarge
    2015 F82 M4 - DCT - YMB
    2008 E90 335xi - AT - TSM

  2. #2
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    Click here to enlarge Originally Posted by Irishace Click here to enlarge
    JB4 map 3 with 45 meth add and 90/10 meth mixture
    sorry, i understand meth mixture (ratio) but what is 'meth add'? is that a jb feature? it looks like it has to be if at the end you say 'next up, 55 meth add'
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    2007 335i Coupe
    Mods: Check the Garage

  3. #3
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    Yes its a JB4 feature for progressive methanol injection.
    2015 F82 M4 - DCT - YMB
    2008 E90 335xi - AT - TSM

  4. #4
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    Click here to enlarge Originally Posted by Irishace Click here to enlarge
    The temperature is dropping nicely here in Toronto and fall turbo weather is settling in. Outside air temp was 16C or 60F this evening so I thought I would test out the power and the nifty little virtual dyno tool.

    The following pull was done on JB4 map 3 with 45 meth add and 90/10 meth mixture (car is FBO). Boost is only 15psi and bang on target, I have never felt the car pull this hard before.

    She is an absolute monster with a lot more left in her. Wastegate duty cycle is negligible and ignition looks very nice (post shift will be the true test) for a flat 3rd gear long pull.

    JB4 Log
    Click here to enlarge

    Virtual Dyno Chart
    Click here to enlarge

    Next up, 55 meth add Click here to enlarge
    I was reading this on n54tech and wondered why you didn't post it here, lol, I missed it.

  5. #5
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    Going to connect with Dzenno and try and add vbox times to the mix, perhaps do 3 runs and plot them all.
    2015 F82 M4 - DCT - YMB
    2008 E90 335xi - AT - TSM

  6. #6
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    Click here to enlarge Originally Posted by Irishace Click here to enlarge
    Going to connect with Dzenno and try and add vbox times to the mix, perhaps do 3 runs and plot them all.
    Awesome!

  7. #7
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    The cold weather makes such a difference, I forgot what it felt like honestly!
    Click here to enlarge
    ESS 6XX kit

  8. #8
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    Cold weather means a lot. It has been cold here for some time but one day it becomes real hot. I almost begin to believe I've got a boost leak...

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