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  1. #1
    4WD Staff adamcj-5's Avatar
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    Bungee Performance

    Just recieved my set in the mail. I almost lost my eye installing it. After that the next thing I noticed was the red clashed with my vehicle color.

    All in all the performance was gained as stated. I ran it on a dyno and sure enough, 15hp!!! It gives the hood a gentle flapping motion as well. Its nice to see manufactures taking the time to really put enginuity in their products. I will be ordering my red valve stems shortly as well. I here they give added traction.
    78 CJ-5 401
    97 TJ
    88 Comanche
    06 Grand Cherokee


    Green for the money, Chrome for the honey.

  2. #2


    My Baby...

    Square Eyed Stepchild

  3. #3
    Administrator TJMagoo's Avatar
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    Adam you need to post the link from the other thread for this to make sense.


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  4. #4
    4WD Staff paineszj's Avatar
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    This is what he is talking about.

    http://jeep-forums.4wd.com/showthread.php?t=39163
    1994 YJ, Dana 60's, 107" wheelbase, 42" Iroks, 4 cylinders of fury, Blah Blah Blah.......


  5. #5
    Rock Crawler
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    ahhh. i see. now i get it.


  6. #6

    I have to agree with you Adam... I just got my set this morning. This mod is extremely dangerous to install but the added benefits are well worth it. I even modified my set to fit my xj. The owner of Spaspotato also agreed to custom paint my new set of rock sliders to match.

  7. #7
    neurochemical disorder blackwater's Avatar
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    be careful . . .

    My instructions were written in Chinese, but I remembered Adam telling me that these things would require drilling for a CJ. I accidentally drilled a hole in my radiator but it was nothing a wooden plug won't fix. After reading the reviews, I decided to wear safety glasses, but still managed to chip a tooth and bust my top lip.

    This is without a doubt the most dangerous mod I've ever attempted. However, it was worth it for the noticeable horsepower gain. I'm thinking I'll probably be ordering the red valve stems myself.
    Myrtle, '77 CJ7, 304, T150. Bringin' her back one piece at a time.

    "Patriotism is supporting your country all the time, and your government when it deserves it."
    Mark Twain

    Well, at least the war on the middle class is going well.

    Quote Originally Posted by rippin YJ View Post
    Blackwater, Grow up you judgemental old fart...

  8. #8
    Yes We Didz! tomsjeep's Avatar
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    I'm still waiting for the KJ model to come out.
    I need the performance boost, and it has to come in black or I'll have to get out the rattlecan to fix it.


    I have a question about the performance boost though. If I install three sets of these, will I see the appropriate 45 hp boost, or is there some complicated geometric formula that comes into play?
    And this product does come with stickers, right?

    "Money can't buy you friends, but it does get you a better class of enemy" Spike Milligan

  9. #9
    4WD Staff Sposato95YJ's Avatar
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    Quote Originally Posted by tomsjeep View Post
    I have a question about the performance boost though. If I install three sets of these, will I see the appropriate 45 hp boost, or is there some complicated geometric formula that comes into play?
    And this product does come with stickers, right?

    well there is a super complicated formula that goes into the design of the bungee performance.. as a matter of fact i have it mastered...

    Horsepower gained, rounded to the nearest whole number = ((number of straps X 1.523 + 32) - (54 X .34)) / ((number of straps X .22) X .97)

    For instance, say you have 3 bungee performance straps..
    (((3 X 1.523) + 32) - (54 X .34)) / ((3 X .22) X .97) = Aprox. 29 Horsepower gain..

    95 YJ 4 banger, Rockhard front Bumper with Smittybilt XRC8 winch, 35" tires, 1" Shackle lift, 3" Body, 4" Procomp Springs.. Stock axles with 4.10 gears..

    01 WJ 4.7 V-8, 2" 4 Wheel Drive Hardware lift springs, 245/75/16 Goodyear Duratrac's on Procomp 7089 Series Wheels..

  10. #10
    Sand Slinger tomz's Avatar
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    Quote Originally Posted by Sposato95YJ View Post
    well there is a super complicated formula that goes into the design of the bungee performance.. as a matter of fact i have it mastered...
    Well, our little 4 bangers could sure use this. It's a lot cheaper than the other mods like fuel modifiers and it is the only performance booster I have seen that won't put more pressure on the Dana 35. To date, 4WD has an exclusive on this product, too.


    TomZ
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    2004 TJ

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