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Discussion Starter · #1 · (Edited)
EDIT: description change


UPGRADE ACCELERATOR SPRINGS, 99-05
The accelerator pedal provides over half of your driving and performance needs. The pedal on these vehicles has 2 springs, a torsion spring and an extension spring. There is more than one spring to protect against a runaway condition if one failed. Except for this protection redundancy, the extension spring on these trucks is nearly worthless, and doesn’t supply any practical travel feel, resistance, or performance feedback. It is fatiguing as well on long drives without cruise control, because you can’t rest your foot on the pedal, it just sinks. The pedal should instead, provide a use-appropriate amount of “feel” or feedback so that you not only have a good idea what you are requesting, but also so that your own body does not provide unwanted input over bumps and during accelerations. A weak or loose pedal causes jerky response, littered with unintended foot inputs. Age can also have a fatigue effect on the accelerator spring rate.

DRIVING -THE MISSING COGNITION
You may really like the way one vehicle drives over another, yet mysteriously you may never be able to put your finger on why. There are many places where this ergonomic impact is felt without any conscious awareness of just what it is, and this is one of those places that happens in the unconcious mind. After completing a round of custom tuning on the duramax equipped truck some years ago, I finally realized that the loose pedal was preventing me from attaining the refined feel I was after. You may have experienced, when going over bumps, engine cycling feedback engine runups that are a detracting driving and contollability experience. This is especially noticeable with high fuel tuning (hot tune). I spent a lot of time trying to tune around it, with frustrating results. These springs reduces all that, as well as reducing the leg fatique. They allow you to drive with your foot at rest, and the increased resistance keeps those pothole runups reduced. If I secretly swapped your spring out for this one, you would be less fatigued, enjoy driving more, and ultimately you would probably never be able to figure out why. Don’t analyze it to much, that is the job for the oem engineer and ergonomics specialist. Suffice that it makes the truck feel more intelligent, more inspiring, more controlled, and more comfortable. Initially these were only for tuning customers, but by request, I have expanded the choices, and made them available separately.

4 CUSTOM SPRING OPTIONS:
HIGHWAY and PAVED ROADS: After doing a bunch of test runs, and evaluating leg fatigue, pedal feedback and vehicle control, I designed 2 new spring options for paved highway use. I suggest that cross country users purchase both of these and decide which is best.

HW-M: Highway Medium. 2x rate, 2x progressive*. A medium rate spring, HM, with double the stock spring rate, perfect for most light footed, on-road drivers. Lowest fatigue on-road use spring. $8.95

HW-H: Highway Heavy. 3x rate, 2x progressive*. A heavier one with even higher spring rate for heavy booted drivers, touchy aftermarket tuning or more bumpy conditions. $9.95

OFF ROAD: These springs were developed to help those who needed more help than the Highway springs provided. Off-road springs will have 4 times the stiffness progressiveness. For example, the 50% throttle position will have 80% increase in spring rate stiffness compared to the 0% position. This just means that they become much stiffer with pedal travel, compared to the hiway springs. If you use rough roads, have size 12 steel tow shoes, or run an extra hot tune, or a combination of factors, then these springs are for you.

NOTE: OFF ROAD springs will ship beginning 5-20-10. Thanks for your patience.

OR-M: On/Off-Road Medium. 4x rate, 4x progressive*. This will be considered by many the BEST COMPROMISE spring for on and off-road operators. It has relatively low fatigue properties with a high progressive spring rate. In most cases, if only wanting one spring for all conditions, this is what I recommend, especially if you live where potholes are a battle. $11.95

OR-H: Off-Road Heavy. 6x rate, 6x progressive*. The ultimate off-road heavy ”steel toe boot” option. If off-road, heavy boot operators need the highest available help controlling throttle inputs, look no further. Just be aware that it can be fatiguing on long smooth trips. Most should considered this for off-road use only, though some heavyweights might find this is the ideal all-purpose spring. $12.95

*spring rate and progressiveness factors comparing to factory spring.

INSTALLATION: About 1 minute with needlenose pliers. The most rewarding minute you will ever spend on your truck.

SHIPPING: Please be patient, these take up to 10 days to arrive after payment, as I ship them once weekly.



.......................99-05 Accelerator Springs.....................
 

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your link isnt working. it says 404 not found
 

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I ordered my spring from Killerbee this a.m. Should be here in a couple days and I'll let yall know if it's worth $15
 

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ya I wnna see it !
 

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K so no 06 springs? or do we even have them? never looked at my pedal...
 

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Discussion Starter · #8 ·
06 and on has a newer spring design that is not easily modified. FWIW, it is also a "dampened" pedal, so it is not as much of an issue.
 

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I for one, love the spring!

Installed the spring from KB not long after the KB tuned ecm, the tunes are great and not to be diminished, as I expected his efi tunes to be great, but the pedal feel is really fantastic.
I am surprised GM never addressed the lack of pedal feel on their own now. Can't wait to tow through the rockies this year!
 

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Anyone got a pic yet? It's $13 for both springs and $15 to have the shipped. Maybe I can make something work locally for $28.
 

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Ordered!!!
 

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I also bought both springs and am running the heavier spring. GOOD JOB Michael, this was a great cheap mod.
 

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stiffens up the loud pedal. before i did this when ever I went over a bump i would press down on the pedal unwantedly.
 

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X3 on the heavy spring!
 

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stiffens up the loud pedal. before i did this when ever I went over a bump i would press down on the pedal unwantedly.
The only time i have a problem with my pedal is when i have one of my race tunes loaded thats just because the have the throttle points changed. Hard to even drive that tune anywhere since the throttle is so touchy.
 

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How hard is it to change the spring out
 
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