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Thread: LNF-LDK-LHU Compare

  1. #21
    Senior Tuner cobaltssoverbooster's Avatar
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    Not the same injectors.

    I will help with the part number for the hose once I arrive home from vacation. A few days.

    I sleeved walls will definitely be as strong but until someone pushes it hard or bored it over we won't know much.

  2. #22
    Senior Tuner cobaltssoverbooster's Avatar
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    ok for anyone who wishes to utilize the booster pump assembly you can order it from a buick dealership for around 48$ before any taxes.

    in the uploaded picture it is part #13
    the part number is 22802727
    this part will most likely be a special order part.
    if the dealership needs to look it up tell them the vehicle is a buick 2013 G-4G2 - Regal. then show them the parts layout attached.

    *special note: Part #1 in the picture cannot be used to connect the new tube to the vacuum booster. The booster assembly in the regal is not the same distance away as like any of the early lnf platforms are. you will have to make your own hose connection.
    Attached Images Attached Images
    Last edited by cobaltssoverbooster; 08-26-2013 at 07:24 PM.
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  3. #23
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    We just finished the install of the LHU into our Cobalt SS yesterday and our LHU has the pump. We have so far just left it capped. Not sure yet if we should hook it up or order the part(s) that may be needed to eliminate it. Opinions?

  4. #24
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    I should have been more clear. So far we have the vacuum booster still installed but we left it's nipple capped off - just how it was shipped. As we don't foresee using/needing the pump in a Cobalt SS application, I have just ordered the part from ZZPerformance to remove the pump itself ($60 shipped). I'm sure I will boost HP by .0001 by removing this pump!

  5. #25
    Senior Tuner cobaltssoverbooster's Avatar
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    im utilizing the pump so i can get rid of the dead spot the lnf has when braking. you have to be paying attention to really notice it but there is a spot right after you start pushing the pedal where there is no assist. the pump takes care of that.
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  6. #26
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    im utilizing the pump so i can get rid of the dead spot the lnf has when braking. you have to be paying attention to really notice it but there is a spot right after you start pushing the pedal where there is no assist. the pump takes care of that.
    How did you connect the pump? Did you simply "T" it into the vac line to the brake booster? Is a check valve needed?

  7. #27
    Senior Tuner cobaltssoverbooster's Avatar
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    look at part #13 in the previously posted picture.
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  8. #28
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    look at part #13 in the previously posted picture.
    Yes, thank-you but 13 just looks like a line with a simple check valve in it and at a cost of $48. And, from your post, 13 cannot be used "as is" because of the physical distance differances between the Regal and Cobalt. As we need to fab a line anyway, it would seem that sourcing a check-valve can be a lot less expensive that $48. Sorry if I missed something.

  9. #29
    Senior Tuner cobaltssoverbooster's Avatar
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    part #1 connects #13 to the brake booster. the booster is the only part that has a difference in distance and so therefore #1 cannot be used. #13 is fine

    if you wish to part out that fine too
    2000 Ford Mustang - Top Sportsman

  10. #30
    Senior Tuner cobaltssoverbooster's Avatar
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    and here is the part that connects your manifold to your vacuum pump looks like
    Attached Images Attached Images
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  11. #31
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    So that's 8, 10, 11, 12, and 13 from the diagram? Can you post the part numbers?

  12. #32
    Senior Tuner cobaltssoverbooster's Avatar
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    this number gets you everything you saw in my last picture
    22802727
    2000 Ford Mustang - Top Sportsman

  13. #33
    Potential Tuner Scot's Avatar
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    Oh boy.

    I think I found my next Sonic engine.
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  14. #34
    Advanced Tuner projectlnf's Avatar
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    think we could use the buick regal ecu in a cobalt ss? obviously getting past the vats and bcm stuff. i think we have more tables on the buick regal ecu than we do on a lnf ecu?? any thoughts
    2003 Ford excursion 6.0 PSD
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  15. #35
    Senior Tuner cobaltssoverbooster's Avatar
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    the connectors and signals are exactly the same the only difference is the addition of a few sensors like oil pan level and quality, amp clamp sensor, alternator regulator control on the newest models and injectors but thats just a reduction calculation by about 10% normally
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  16. #36
    Advanced Tuner projectlnf's Avatar
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    Quote Originally Posted by cobaltssoverbooster View Post
    the connectors and signals are exactly the same the only difference is the addition of a few sensors like oil pan level and quality, amp clamp sensor, alternator regulator control on the newest models and injectors but thats just a reduction calculation by about 10% normally
    in my opinion it would be worth it to someone who has the electrical knoledge and a way to get all the connectors and ecu. it has more tables and more control over whats going on. i think i found my winter project for this winter..
    2003 Ford excursion 6.0 PSD
    No limit intake
    Straight pipe
    Studded
    EGR delete
    KC billet single plane compressor wheel
    Self Tuned
    XDP Regulated return
    RDP Fuel sump
    AEM progressive water meth
    Custom suspension air bags
    8" lift
    35" tires

  17. #37
    Senior Tuner cobaltssoverbooster's Avatar
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    It's been done just not shared so I think you will like it if the extra tables are what your after.

  18. #38
    Advanced Tuner projectlnf's Avatar
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    Quote Originally Posted by cobaltssoverbooster View Post
    It's been done just not shared so I think you will like it if the extra tables are what your after.
    i feel like the extra tables would help me out alot.. more control instead of a balancing act.
    2003 Ford excursion 6.0 PSD
    No limit intake
    Straight pipe
    Studded
    EGR delete
    KC billet single plane compressor wheel
    Self Tuned
    XDP Regulated return
    RDP Fuel sump
    AEM progressive water meth
    Custom suspension air bags
    8" lift
    35" tires

  19. #39
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    Any additional updates OP? I'm thinking about swapping in a LDK/LHU next summer/fall

  20. #40
    Senior Tuner cobaltssoverbooster's Avatar
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    there really isnt much to update...it worked with my original computer just fine. everything was the same. that motor has long since been pushed over the edge and returned to the scrap heap it came from.
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