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  1. #1
    Veteran Member Four Rings rhfosu's Avatar
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    Jan 01 2015
    AZ Member #
    306948
    Location
    Alexandria, VA

    Need help reading compressor maps...

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    I currently have a gt2871r, and I am considering a gen 2 gtx2860r for quicker spool. However, an EFR6758 has popped up, and I am tempted. I am looking for quicker spool, and I cannot read compressor maps very well. Looks like the EFR flows more up top, and the turbine doesn't spin nearly as fast, but I don't know how that correlates to revs. Looking for the best possible option for power down low. Any help reading these maps would be appreciated.

    https://i.imgur.com/D6fNrbF.jpg

    https://i.imgur.com/OQUopK3.jpg
    "I don't understand Audi enthusiasts. They buy a car that looks like a bar of soap, then they spend money modifying it so it looks slightly less like a bar of soap."

  2. #2
    Veteran Member Four Rings IronAudi's Avatar
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    Jun 13 2007
    AZ Member #
    18758
    Location
    Middletown, CT

    Simple search will show you what you need to know. Its not hard.

    https://www.enginelabs.com/engine-te...-turbocharger/
    2018 C7.5 A65 3.0 S BB Bone Stock - for now.
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  3. #3
    Veteran Member Four Rings rhfosu's Avatar
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    Jan 01 2015
    AZ Member #
    306948
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    Alexandria, VA

    Quote Originally Posted by IronAudi View Post
    Simple search will show you what you need to know. Its not hard.

    https://www.enginelabs.com/engine-te...-turbocharger/
    I read this exact article before posting this. I am simply not smart enough to translate that into the real world.
    "I don't understand Audi enthusiasts. They buy a car that looks like a bar of soap, then they spend money modifying it so it looks slightly less like a bar of soap."

  4. #4
    Veteran Member Four Rings rhfosu's Avatar
    Join Date
    Jan 01 2015
    AZ Member #
    306948
    Location
    Alexandria, VA

    Quote Originally Posted by IronAudi View Post
    Simple search will show you what you need to know. Its not hard.

    https://www.enginelabs.com/engine-te...-turbocharger/
    Best I can tell, the EFR is most efficient flowing 25-35 lbs/min, and the gtx is most efficient flowing 20-30. Garrett spins way faster though, which means hotter. I just don't know enough.
    "I don't understand Audi enthusiasts. They buy a car that looks like a bar of soap, then they spend money modifying it so it looks slightly less like a bar of soap."

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