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Thread: 8.1/alli fuel econimy

  1. #1
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    Default 8.1/alli fuel econimy

    any one have any econimy tunes for an 01 8.1/alli?All new at this but learning,want to compare files.thanks

  2. #2
    Lifetime Member N0DIH's Avatar
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    I am going to be working on some for my 454 soon, not the same, but similar... Once I get going on it I will keep you posted....

  3. #3
    Lifetime Member N0DIH's Avatar
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    What do you get for fuel economy now?

  4. #4
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    Quote Originally Posted by N0DIH
    What do you get for fuel economy now?
    i am getting about 13.5 empty @65mph. not bad huh but I think it can be better.

  5. #5
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    I have mileage/performance tune available for an 01' 8.1L.

  6. #6
    Lifetime Member N0DIH's Avatar
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    I am getting around 12 flat with E85 highway @ 65mph. So I am guesstimating around 15 with gas. Mine's a 3.73 454 99 Sububran.

    A friend of mine is picking up a 03 Avanlanche 2500 (8100 is only engine available in 2500), I'll be tuning it to see how well we can do.

  7. #7
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    I'd be interested to see your results with the 8.1

  8. #8
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    Any update on this?

    Im trying to learn to tune my 8.1 also..

  9. #9
    Lifetime Member N0DIH's Avatar
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    My friend just got a 8.1 Avalanche we have done some small things so far, will keep you posted as we get data on it.... If you don't hear from me in a while, reply to this post so I get the email...

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