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Thread: 2015 Silverado/Duramax upgrades

  1. 10-25-2016, 12:29 PM #21
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    Quote Originally Posted by Tee View Post
    I'm getting 22 around town in my duramax with 35" tires and 4" suspension (dually)

    I have EFI, 6" exhaust, EGR, DEF and DPF delete.

    Truck is insane.

    KRT.... Which EFI did you go with?
    That's insane for a truck that weights north of 9k
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  2. 10-25-2016, 12:30 PM #22
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    Quote Originally Posted by Tee View Post
    I'm getting 22 around town in my duramax with 35" tires and 4" suspension (dually)

    I have EFI, 6" exhaust, EGR, DEF and DPF delete.

    Truck is insane.

    KRT.... Which EFI did you go with?
    Is that the dash computer or actually calculating the numbers?
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  3. 10-25-2016, 12:38 PM #23
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    Quote Originally Posted by uga_dawg View Post
    Is that the dash computer or actually calculating the numbers?
    That's on the dash.

    Everything has been reprogrammed to the current tire size ect.

    GPS speed is dead on.
    Quote Originally Posted by JABIII View Post
    Bested by Tee. Just damn...
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  4. 10-25-2016, 03:15 PM #24
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    Quote Originally Posted by Tee View Post
    I'm getting 22 around town in my duramax with 35" tires and 4" suspension (dually)

    I have EFI, 6" exhaust, EGR, DEF and DPF delete.

    Truck is insane.

    KRT.... Which EFI did you go with?

    More fuel = more boost!!
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  5. 10-25-2016, 03:19 PM #25
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    Another one

    More fuel = more boost!!
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  6. 10-25-2016, 03:23 PM #26
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    Tee shoot me a pic of the new rig all did up.
    More fuel = more boost!!
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  7. 10-25-2016, 08:24 PM #27
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    I went with GDP tunes. Somewhat satisfied. They have a ton of low end not so much in the mid range.

    This is all I've done for now.

    Quote Originally Posted by JABIII View Post
    Bested by Tee. Just damn...
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  8. 10-25-2016, 08:26 PM #28
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    Those trucks need lift pumps. Tunes arnt shit on them without lifts
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  9. 10-25-2016, 08:58 PM #29
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    Quote Originally Posted by santeeswamper View Post
    Those trucks need lift pumps. Tunes arnt shit on them without lifts
    Yup.
    Quote Originally Posted by JABIII View Post
    Bested by Tee. Just damn...
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  10. 10-26-2016, 03:59 AM #30
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    Looks good Tee.

    I agree on lift pump if you're going radical with tuning/HP etc. just a tow tune or even performance tune the stock pump is fine.

    The lift pump will help with the bullshit CP4 pump failures on the LML Duramax.
    Last edited by KRT; 10-26-2016 at 06:17 AM.
    More fuel = more boost!!
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  11. 10-26-2016, 05:14 AM #31
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    That truck looks good Tee. A lot nicer than those Dodges you used to drive.
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  12. 10-26-2016, 06:43 AM #32
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    Boys, the truck KRT is talking about is mine. I couldn't be more pleased with the performance I am getting out of it. It's got crazy torque and the fuel economy is way more than I expected. If you have a duramax it's well worth the money taking it to this mystery mechanic and getting a full delete.
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  13. 10-26-2016, 07:24 AM #33
    Palmetto Pride
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    How many MPG at 75-80 interstate speeds?
    “The price of freedom is eternal vigilance” - Thomas Jefferson
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  14. 10-26-2016, 07:39 AM #34
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    20 plus depending on tune
    More fuel = more boost!!
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  15. 10-26-2016, 08:26 AM #35
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    At 76 I'm 22-26 depending on whether I'm in the hills or flat road
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