Page 1 of 2 12 LastLast
Results 1 to 20 of 21

tune on the duramax...

This is a discussion on tune on the duramax... within the GM Trucks forums, part of the Vehicle Specific category; Loaded a 90HP tune today on the truck and corrected for the larger tires. The speedo still feels like it's ...

  1. #1
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    tune on the duramax...

    Loaded a 90HP tune today on the truck and corrected for the larger tires. The speedo still feels like it's off to me but after driving it again tonight I'm not so sure. I'll have to pace my wife's car to see where it's at. Definitely gave the truck more pep. I'm not running a pyro or boost gauge so I want to stay conservative until I get those. Also on the stock tranny so that's a concern.

  2. #2
    Big Gulps, huh? HOBS's Avatar
    Join Date
    May 2009
    Location
    Idaho
    Posts
    440

    Black
    1999 Trans Am

    What tuner did you get? Its a mighty slippery slope once you start modding diesels, just cause the power is so easy to get. Have fun!

  3. #3
    Junior Member
    Join Date
    Feb 2011
    Location
    Tampa, Fla.
    Posts
    22

    sandstone grey
    2009 silverado

    I never understood why the factory didnt put better transmissions in the deisel trucks. there are guys pulling alot of hp out of these thing and the trans is always a problum from the very start. oh well good luck with yours

  4. #4
    Your dealership guy konigandy6's Avatar
    Join Date
    Aug 2007
    Location
    Romeo, MI
    Posts
    6,557

    Velocity Yellow
    2008 Corvette Z06

    Do you not have an Allison? Can't get much better than that.

  5. #5
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    Quote Originally Posted by HOBS View Post
    What tuner did you get? Its a mighty slippery slope once you start modding diesels, just cause the power is so easy to get. Have fun!
    just a tune out of the repository on the diesel boards. I'm gonna have to adjust it....shifts like ass. I'll have to log the truck first and get some good logs and see what's going on but I'm not liking the shifts at all.

  6. #6
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    hmmmm.....doing some reading. Looks like I got more modding to do. I think what's going on is the truck is de-fueling and that's why the shifts feel so shitty. Looks like a transgo jr is in my future and probably a lift pump. Or I put the stock tune back in and call it good to go I already have 1 money pit....don't need another one.

  7. #7
    Junior Member
    Join Date
    Feb 2011
    Location
    Texas
    Posts
    3
    1964 chevy c-10

    are you using efi live to tune your duramax, Ive been running a 150hp tune on mine for 2 years now with stock trans and no problems. You are going to need to add a lift pump and exhaust to run a good tune correctly. Im running an Airdog 150 lift pump, 4" MBRP straight piped exhaust(no cat, no DPF), Efi live tuning on my 2007 ecsb. thats all you need to have one fast a** duramax

  8. #8
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    yeah...efilive. I have 4" diamond eye straight piped exhaust on there. Looks like I'll be in the market for a lift pump. Them bastards are pricey!!! If I do that I'll do a trans go jr too. It starts adding up in a hurry. I'll have to decide ultimately what I want to do.

  9. #9
    Senior Member Tyler_LS1's Avatar
    Join Date
    Sep 2006
    Location
    Canby, Oregon
    Age
    29
    Posts
    2,121

    Pewter
    1999 Camaro SS-M6 #1775

    I don't see why you would need a lift pump for a 90hp tune, you should have Rob sen you a tune and try it. I mean a lift pump won't hurt but I've got a couple friends running smaller tunes without a lift pump and they run and shift great. Do you have a DSP switch?

  10. #10
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    not yet.....my bumper to bumper just expired so I haven't really done anything to the truck yet. I need to get out and log and see what's going on with the shifts. The 1-2 shift just feels like shit. Feels like it's shifting early (the tach looks like it's close though) and doesn't really shift with authority. It kinda limps into 2nd gear. I gotta log it is all.

  11. #11
    Junior Member
    Join Date
    Feb 2011
    Location
    Texas
    Posts
    3
    1964 chevy c-10

    Quote Originally Posted by Tyler_LS1 View Post
    I don't see why you would need a lift pump for a 90hp tune, you should have Rob sen you a tune and try it. I mean a lift pump won't hurt but I've got a couple friends running smaller tunes without a lift pump and they run and shift great. Do you have a DSP switch?
    I'm running Idaho Robs tunes on a dsp5 switch, the lift pump actually makes a world of a difference, with it you aren't going to run outta fuel at wide open throttle and your truck will shift better because it will eliminate defueling with on your smaller tunes.

  12. #12
    Big Gulps, huh? HOBS's Avatar
    Join Date
    May 2009
    Location
    Idaho
    Posts
    440

    Black
    1999 Trans Am

    It shifts funny so you think its de-fueling? I doubt a 90HP tune would drain your rail and if by some oddity it is it would only do it under WOT. Still de-fueling feels different from a bad shift in my experience. Try a different tune lots of people think they're masters at efilive but few are.

  13. #13
    Junior Member Gama6970's Avatar
    Join Date
    Feb 2011
    Location
    Texas
    Posts
    18

    Cobalt blue
    1964 c-10

    Hey listen to eacostad. That truck hauls ass like I've never seen one do.

  14. #14
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    my tranny adjusted and is shifting fine now.....took it forever to adjust to the tune. Wonder if you can disable adaptive shift in the tune? I haven't even looked at the tranny side of things yet.

  15. #15
    Senior Member 5.0THIS's Avatar
    Join Date
    Oct 2001
    Location
    Colorado
    Posts
    3,704

    red
    95 Z28

    I thought 50-75hp was the limit on a tune without putting the tranny into limp mode... or did your tune account for that? You could always just throw a 50hp handheld tune into it live with it. those are pretty safe and still add some power.

  16. #16
    CAMARO not Maro asshead! HASTINGSRJ's Avatar
    Join Date
    Jan 2001
    Location
    MASSHOLE in Jville NC
    Age
    44
    Posts
    2,012

    Black/Gray
    00 SS Vert#0540/ 03 GMC

    you will put the tranny into limp mode if you do boosted launches. On a 90 hp tune he should be fine. I run a 100 hp, tow, economy, stock and hot tune on a stock tranny with no problems. I dont play with the hot tune (200 hp) too much though.

    http://www.gmhightechperformance.com...aro/index.html
    Black 00 SS M6, vert, #0540 414 C.I. iron block 501hp 448tq -slipping clutch
    old times 11.39@123 tuned by RPM
    11.49run


    DD 03 GMC Sierra, Durmax CCSB 2500, 17" XD's, 5" tubo back exhaust, AFE intake, EFI Live, DSP5, 3" body lift, tuned by Diesel Addiction 347hp 645tq

    rwhp.us

  17. #17
    someday joejenkinsglass's Avatar
    Join Date
    Oct 2006
    Location
    Iowa
    Age
    40
    Posts
    1,120

    green
    98 formula

    be carefull the stock ally is only rated about 70 hp more than the stock dmax. It is so easy to over power. What we have to remember is when you add a little hp it comes with alot of torque. My old 93 chevy has the drivetrain of a 2008 dmax and its great but your right the shifts are nothing like a gasser. It will defuel between shifts unless tuned out. We need a site like this one for our diesel trucks. Diesel place was alright till lately now they are wanting a subscription f that. Mods we could use a good free place to talk smoke

  18. #18
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,576

    Black & Blue
    '02 WS.6 / '07 Suburban

    I don't speak "diesel" -- what's a lift pump?

  19. #19
    Senior Member Tyler_LS1's Avatar
    Join Date
    Sep 2006
    Location
    Canby, Oregon
    Age
    29
    Posts
    2,121

    Pewter
    1999 Camaro SS-M6 #1775

    90hp with the stock 6speed ally is pretty safe, you can always add the transgo jr to help beef it up a tad. what ruins the ally is the High HP tunes on the 4-5-6 shifts. a lift pump is a lower pressure pump (11-12.5 psi) that pumps more volume up to the CP3 (safer and necessary when running bigger tunes) the CP3 pump is the injection pump using higher pressure to feed the injectors some will run Dual CP3s
    Last edited by Tyler_LS1; 02-27-2011 at 10:29 AM.

  20. #20
    Senior Member FasstChevys's Avatar
    Join Date
    Oct 2005
    Location
    Minnesota
    Posts
    3,315

    White
    '10 ZR1

    Quote Originally Posted by joejenkinsglass View Post
    be carefull the stock ally is only rated about 70 hp more than the stock dmax. It is so easy to over power. What we have to remember is when you add a little hp it comes with alot of torque. My old 93 chevy has the drivetrain of a 2008 dmax and its great but your right the shifts are nothing like a gasser. It will defuel between shifts unless tuned out. We need a site like this one for our diesel trucks. Diesel place was alright till lately now they are wanting a subscription f that. Mods we could use a good free place to talk smoke
    http://www.duramaxforum.com/

    Have you tried this one? It isn't too bad from what I can tell.

    I have a Hypertech Powerprogrammer III in mine with the 100 hp 'setting'. No issues as of yet. I think what it has is enough - I don't want to lose the transmission by thinking it's a race car. It gets right around 18 mpg - I'm pretty happy with that.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Blazer vs Duramax :D
    By Firebirdjones in forum GM Trucks
    Replies: 19
    Last Post: 12-20-2012, 03:12 PM
  2. tag of war duramax vs cummins.
    By dav-02ws6-m6 in forum Almost Anything Goes
    Replies: 8
    Last Post: 12-17-2012, 05:54 PM
  3. Duramax???
    By StuntmanMike in forum Kill Stories
    Replies: 32
    Last Post: 04-16-2008, 01:11 PM
  4. Handheld Tune?shop Tune? software running on my laptop tune?on my SS
    By showtimesteele99SS in forum Computer & Tuning
    Replies: 4
    Last Post: 04-09-2007, 06:31 AM
  5. Can anyone help me find a Chevy Duramax site?
    By FasstChevys in forum Almost Anything Goes
    Replies: 2
    Last Post: 02-08-2006, 07:37 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •