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Westers custom programming on sale!

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We are offering 10% off and FREE shipping for all Westers tuning orders that are placed through Sunday evening (5/1). Orders can be placed online or by calling 1-877-482-9763. A custom programming form will be sent to you after you place your order.


Westers programming is custom made for YOUR vehicle so it's not a "cookie cutter" type program that you find with most of the handhelds. The tuning covers all of your current mods and can be upgraded at no charge for other changes that you make in the future. Some product info is listed below. More details can be found on our website.




Lifetime warranty (no cost or fees)


Lifetime updates for all future mods ($45 shipping and handling fee)


Lifetime full price paid credit toward your next custom tune for your next vehicle ($45 shipping and handling fee)


No vehicle downtime! You will receive your recalibrated PCM before sending your core back. Want to upgrade this for other mods in the future? No downtime here either! The same thing can be done for this too.




Customers have been seeing about 24-34hp from the 5.3 28-50hp from the 6.0 and 25-55 horsepower from the 8.1 motor. The spread depends on how aggressive the tuning is along with other modifications that are done to the vehicle. Fine tuning for other mods will sometimes make more of a different than just running those with the stock programming.


Octane level. Wester's performance tunes are now available with these octane choices:


1) Dual 87-91 Octane tune -- automatically adjusts for octane. Our basic working truck tune. Many improvements over stock. Using the higher octane will usually increase the gas mileage in all our tunes!


2) Dual 89-93 Octane tune -- automatically adjusts for octane. More performance than the 87-91 tune, but requires using 89 minimum octane. (These dual octane tunes are recommended for all dual purpose (work/play) trucks.


3) 91 Octane HOT tune -- much more aggressive than the 87-91 dual octane tune. (Recommended for performance trucks where higher than 91 octane fuel isn’t available, like in California.)


4) 93 Octane HOT tune -- much more aggressive than the 89-93 dual octane tune. 93 octane is recommended. (Recommended for performance trucks. No, or very limited, heavy towing or hauling for both these Hot tunes!


5) Dual 89-91 Octane HOT tune...The most aggressive and hottest tune available for 91 octane limited area’s! Eliminates pinging issues with some engines running 91 octane by automatically adjusting to 89 octane tuning if pinging is detected. 91 octane is recommended. Suitable for areas where only 91 octane is the highest available.

(Recommended for performance trucks. No, or very limited, heavy towing or hauling!)


Have a good day!


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