Cat 475 vs 550 vs 625

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by tnc110, Nov 2, 2017.

  1. RobTheMech1

    RobTheMech1 Bobtail Member

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    Will CAT tune it higher than what the trans is rated for or will I have to go to someone outside of
     
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  3. RobTheMech1

    RobTheMech1 Bobtail Member

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  4. lester

    lester Road Train Member

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    No cat is not likely to tune it over the weakest rated parts. But I wouldn't have a dealer tune it anyway. There are much better options for tuning outside the dealer
     
    Bean Jr. and black_dog106 Thank this.
  5. RobTheMech1

    RobTheMech1 Bobtail Member

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    What are those options? Or we can’t mention it here? Lol
     
  6. lester

    lester Road Train Member

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    Custom tune. There's lot of people that have them or do them. Facebook cat engine masters has some good guys
     
    Shawn2130 Thanks this.
  7. w9l

    w9l Light Load Member

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    Compounds are great with proper tuning but somewhat harder to maintain. More places to leak and burn out in exhaust path and much harder to change thermostats and the like.
     
  8. AModelCat

    AModelCat Road Train Member

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    Cat dealer will put the latest and greatest low NOx file in it anyways. If you're pre-low NOx I'd leave it alone over having a dealer tune it.
     
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