ECU

Discussion in 'Experienced Truckers' Advice' started by AriGab, Dec 2, 2024.

  1. AModelCat

    AModelCat Road Train Member

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    The engine only makes so much power. You might have more gear reduction at the axle with 4.10's but you're going to be in a higher gear in the transmission so you're pretty much in the same place all said and done.
     
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  3. AriGab

    AriGab Light Load Member

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    Do you think 4.10 gears are not necessary? Would 3.90 gears be better? Trying to find the perfect balance
     
  4. 062

    062 Road Train Member

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    @Goodysnap may be able to help with the speed limiter question.
     
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  5. snowwy

    snowwy Road Train Member

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    A 20 year old truck. Speed could have been changed. I think the speed limit may have been lower in 2005.

    The ecu settings can be changed.
    I once drove an 05 w900 that was a swift truck. It was set for 65. Untill it got the ecu reflashed. It had no limits after that. Except maybe the rpm.

    Keep in mind it may have a password. Cummins had to use a zapper software to crack the password before they could reflash it.
     
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  6. Goodysnap

    Goodysnap Road Train Member

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    On new truck orders the speeds can be set to the customers request upon delivery. You can have the speeds changed to what you wish. Cummins engines have a max speed setting of 125. Note- most heavy spec vocational trucks with the big rubber on steers- 385 and 425 are max speed rated at 68mph. Most dealers will not set the speeds above this for liability/ safety reasons.
     
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  7. Ridgeline

    Ridgeline Road Train Member

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    Have you actually talked to the dealer?

    the dealer is better to talk to than people on any forum.

    Most dealers have ordered a few trucks and know how to gear them and how to have the truck setup for you, the customer.
     
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  8. buzzarddriver

    buzzarddriver Road Train Member

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    Honey buckets should be limited to 45mph.
     
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