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Discussion Starter · #1 ·
how much is the speedometer off when running 33's? did you notice a difference in how the tranny shifts after the hypertech was installed?
 

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If you're running a "true 33" and the stock tires are 32.1" you're 2.76% difference taller.

So, if you're getting 200 miles to a tank with the 33s on an uncalibrated odometer, then your'e actually running 205.52 miles.

At 20 gallons, you're going from 10 mpg to 10.276

Now, you're getting 300 highway miles to a tank, you're getting 308.28 miles.

At 20 gallons, you're going from 15 mpg to 15.414 mpg.

Hopefully my math is correct.

-rockstate
 

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For the record, with my 285/65/18s (about 32.8" according to specs - they actually measure a lot smaller), I notice it doesn't redline as high, but it's fine for cruising. It stays in 6th speed on the highway and doesn't excessively shift.

-rockstate
 

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Discussion Starter · #4 ·
mine likes to shift way more than it did with stock wheels/tires. im sure the weight of the aftermarket wheels and larger tires has something to do with it too... i am just sick of it shifting all the time. i have lived with it for 2 years, but at this point i am ready to spend $200 for the module if it will help me out.
 

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cruise control is a nightmare running 75MPH with my 33's. downshifts when the wind changes direction. i'm considering the hypertech also.
 

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Bocephus.... Im running the exact same tire and size. I have a uni-chip with mine also and sometimes notice a big power loss (low rpm) when i hit 2nd gear if i push the pedal to the floor. Im wanting to get the hypertech when I get back from my deployment. Let me know if it helps. I want mine to run just as good as it did stock but with all the upgrades. Also... are you having difficulties with balancing those ATZ's?? I seem to have to get mine balanced all the time. Don't know if im throwing weights, or if Discount tire is just jackin it up for me.
 

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Ewespank, check out some dynabeads. They're about $40 but can be inserted into the valvestems. Apparently they'll make any tire run smooth as glass as well as never have to be balanced again. Check out their website.

Thanks for serving!

-rockstate
 

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What! No way! Definatly gonna check that out. Thanks for the info!
 

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hypertech made shifting smoother just like stock. good investment. i have 15% off coupon code (CPC15) for autoanything and i think it's expiring in 2 days. they have 1 yr price match guarantee so get it from them now and worry about the prices later.
 

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4 Wheel Parts is selling them for $180.00 out the door online...
 

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Opps.... nevermind they tricked me with Az taxes. $197.00 out the door. Ordered one anyway.
 

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Discussion Starter · #13 ·
hypertech made shifting smoother just like stock. good investment. i have 15% off coupon code (CPC15) for autoanything and i think it's expiring in 2 days. they have 1 yr price match guarantee so get it from them now and worry about the prices later.
what size tires are you running?
 
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