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  1. #16
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    What power mods do you have? Frankly Iím surprised you say you have good power. Mine couldnít roll down the interstate at 75 without shifting on every little hill with 4.10s.

  2. #17
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    Thats not to bad ill add a regear to the list. I did buy the truck used with 37s but i doubt they reageared it since they didnt go up much from 35s but not for sure.and all i have is a cai thinking about doing an exhaut this weekend .

  3. #18
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    No programmer?

    Man my truck must have been tired, I think the next big big thing I do will be long tube headers and full exhaust but with the factory exhaust tip. That and a tune should give me a big boost, if thatís not enough then Iíll cam it. By that point I should be able to lunch another transmission.

    Iím telling you unless I was on flat roads with no winds going no greater than 65 mph my truck just didnít want to go without shifting to third. Absolute dog on the highway. Iím the type of person that will put on cruise control to go 2 miles, but I havenít used cruise on my truck in years due to the constant shifting.

  4. #19
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    Speaking of I need to get a new air filter and spark plug wires.

  5. #20
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    Nope no programmer id like to do one but i see so many mixed reviews. And i want to get some nice exhaut tips but i dont want it to hinder me offroad.how many miles does your h2 have?

  6. #21
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    Iím at 171k, bought in 2011 with 48k. Yourself?
    Last edited by Iwillnc; 05-21-2020 at 12:14 PM.

  7. #22
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    Nice i bought in 2017 with 126k currently just hit 133k i try not to drive it to much lol.

  8. #23
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    Ahh yes, your not doing that much driving. I have 2 other cars including an SS sedan, and then a motorcycle on top of those. I still find myself reaching for the H2 keys.

  9. #24
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    Haha nice i understand man its so hard to resist driving it!

  10. #25
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    I just drove the truck around to get lunch. I canít put into words how much better everything is. Frankly itís like an entirely new drivetrain, shifts are 10x better, acceleration is 10x better, feel is 10x better. I mean I am supremely happy.

    Furthermore I have to give another hand to outfitter design, I took a route I am very used to which includes rough and steeply sloped railroad crossing. This was the first time my truck has taken this drop without the entire truck shaking and clunking about. I mean there was no noise, no shake.
    I crossed the track like you would in a brand new Lexus LS.

    I cannot give enough props to ECGS for their work and I have to say this is a game changer, my 2003 trucks drivetrain feels like it belongs in this decade.

    Now I just need to suck it up and drop the $600 for the redhead box, itís killing me knowing how much it costs, the core charge is crazy - itís going to be a long wait til that gets back into my account. I have my rock auto cart filled with some goodies and the redhead site open with the steer box ready to buy.
    But I got some heartache over spending that much more.

  11. #26
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    Quote Originally Posted by Iwillnc View Post
    I just drove the truck around to get lunch. I canít put into words how much better everything is. Frankly itís like an entirely new drivetrain, shifts are 10x better, acceleration is 10x better, feel is 10x better. I mean I am supremely happy.

    Furthermore I have to give another hand to outfitter design, I took a route I am very used to which includes rough and steeply sloped railroad crossing. This was the first time my truck has taken this drop without the entire truck shaking and clunking about. I mean there was no noise, no shake.
    I crossed the track like you would in a brand new Lexus LS.

    I cannot give enough props to ECGS for their work and I have to say this is a game changer, my 2003 trucks drivetrain feels like it belongs in this decade.

    Now I just need to suck it up and drop the $600 for the redhead box, itís killing me knowing how much it costs, the core charge is crazy - itís going to be a long wait til that gets back into my account. I have my rock auto cart filled with some goodies and the redhead site open with the steer box ready to buy.
    But I got some heartache over spending that much more.
    Glad to hear that it turned out so well.


    Sent from my iPhone using Tapatalk

  12. #27
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    Reading this Now im interested in swapping to 4.56 gearing! Glad to see you're happy with the new setup!
    06 H3, Birch White, Lux , Cooper AT3 35s, Borla Performance Cat-back, Bilsteins front w/ 1/2" extended stops, Hunner sleeve, Air Doc w/ K&N filter, Oem Roof lights, 55W HID Headlights and 35W Fog lights.

    09 H3 V8, LS376/480 Conversion, 3000 stall, Arctic Silver, 35s, XD Rockstar Wheels 17x8 Front 17x9 Rear, OEM Sliders, 40K External Trans Cooler, Bilstein 5160s front 5100 rear, O.D. Steering Bracket, Daystar 1" Body Lift, Borla Performance Cat-Back, custom intake pipe & K&N filter, Custom PCM tune, Pioneer DVD unit, Aurora 40" LED Light Bar, 50 W HID Headlights

  13. #28
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    Do it, if your running 35s on your truck with all that added weight from your mods you should feel a nice difference on your 3.

    My buddy has a 06 with 295s and they are truly too much for his truck and that 3.5L. Yourself having the 5.3L would definitely see real world gains from going to 4.56.

    I passed a car on a two lane road yesterday without downshifting - I completely passed a car in 4th!!! gear. My truck could barely stay in 4th before.

  14. #29
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    I actually upped to 37" KM3s last year, and my 4th gear rpm are too low at 70 mph (1950). With the cam Im running im waaay out of the power band!
    06 H3, Birch White, Lux , Cooper AT3 35s, Borla Performance Cat-back, Bilsteins front w/ 1/2" extended stops, Hunner sleeve, Air Doc w/ K&N filter, Oem Roof lights, 55W HID Headlights and 35W Fog lights.

    09 H3 V8, LS376/480 Conversion, 3000 stall, Arctic Silver, 35s, XD Rockstar Wheels 17x8 Front 17x9 Rear, OEM Sliders, 40K External Trans Cooler, Bilstein 5160s front 5100 rear, O.D. Steering Bracket, Daystar 1" Body Lift, Borla Performance Cat-Back, custom intake pipe & K&N filter, Custom PCM tune, Pioneer DVD unit, Aurora 40" LED Light Bar, 50 W HID Headlights

  15. #30
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    Well then itís a perfect time for me to make an update, with my 35.6 in tires @ 80MPH per Waze GPS (my speedometer is now 6-7MPH off when at 80) my engine is turning 2,475 RPM

    And iirc at 60 (per GPS) Iím a hair under 2k RPM.

    I am very happy with that RPM and I think it will be fine once I get to a truer 37Ē (36.5). Iím glad I didnít go with 4.88s at this time because itís psychologically a lot of RPM to be turning on an engine this size. I mean honestly it doesnít care but my brain says ďwoahĒ.

    I did downshift once at 76MPH at a steeper incline, but maintained 12.2 MPG at 78 MPH which is good with me.

    Itís past due for me to get an air filter and Iím probably only 15-20k miles from another set of plugs and wires. I would like to eventually get around 300HP and 350lb-ft to the ground - but Iím going to leave that for another time - Iím very happy with my improvements so far.


 

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