Where's my sweet spot??

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Sumothertrucker, May 24, 2011.

  1. Sumothertrucker

    Sumothertrucker Light Load Member

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    Thanks Kurt. Always appreciate your input. I origanally planned to do the manifold and turbo next but found 2 pretty good size chunks of tooth in the differential a while back (before I bought your tune, so no it wasn't my foot). So wanting to go through them before to much longer combined with a sweet deal on some used lopro superduper singles from my tire guy, I thought now might be the time. I like your idea of staying with 3:36 and going to the lopros. thanks again for your input.
     
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  3. Mr. Haney

    Mr. Haney Road Train Member

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    your welcome
     
  4. SHC

    SHC Spoiled Rotten Brat O/O

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    I found this out last week. My MBN runs at 1335rpm at 60mph. I bumped it up to 65mph (1,425 rpm) and I still got 5.4mpg, same as the 60mph rate.

    Now just to get that #### tune done
     
    Sumothertrucker Thanks this.
  5. Powell-Peralta

    Powell-Peralta Road Train Member

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  6. Sumothertrucker

    Sumothertrucker Light Load Member

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    Well my Lab would have yah believe it's on her tummy right behind her rib cage. I can tell when her back foot starts itchen air. She loves that.:yes2557:

    But me CAT thinks it's the rpm where it's workin the least and most efficiantly therefore eating less.
     
  7. Oscar the KW

    Oscar the KW Going Tarpless

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    I have 3.36's and hate them. I don't think my truck pulls very good in the hills. 550 acert and 18 spd.
     
  8. Sumothertrucker

    Sumothertrucker Light Load Member

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    What are you running for tire size? Is your 18 a double or single overdrive?
     
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