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We are running a group purchase that covers all of the Westers Custom Tuning. This has been very popular for trucks and SUVs. Horsepower and torque is increased, torque management is greatly reduced (you won't feel the vehicle "lay down" during the 1st to 2nd shift anymore), fuel mileage can increase and overall driveability can improve!

A custom programming form will be provided after you place your order. This allows you to note your vehicle's info and there is also a place for you to let the tuner know what you are looking to get from this upgrade. Some people might only want to focus on performance, some might lean towards better gas mileage and others may want something that is in the middle.

A quick rundown is below. More details can be seen in the Group Purchase section of our website along with in the Truck Ignition sections.

Standard with all performance tunes

Complete reflash of the PCM to your VIN, with all factory updates.
Dyno developed performance tune optimized for your exact engine and transmission combination.
Raised and optimized shift points.
Firm, but not harsh, shifts.
Elimination of all torque management that can be safely removed
Some of the more common modifications to ask for.
Raising the top speed limiter to any speed you specify.
Specifying the exact shift points you want in every gear.
Firmer (or softer) shifts.

Specific tuning for your modifications, like larger than stock tires, gear ratio change, supercharger, turbo, headers, cam change, higher stall converter, engine modifications, etc.

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.

Torque management (TM) is GM's effort to reduce transmission wear by reducing engine output through timing retard during “abusive” maneuvers. The problem here is that GM believe acceleration from a stop is an “abusive” maneuver, as is punching the throttle during a highway merge. Both of these maneuvers cause an immediate reduction in engine power – the characteristic fraction-of-a-second delay you experience when you try to make your truck . We reduce this approximately 75-80%, which still leaves enough TM to protect from the most abusive maneuvers. We believe it makes for a safer and more responsive truck without introducing unnecessary wear on the drivetrain. The “Remove most all” option on the order form is appropriate for most owners.

Transmission shifting. This refers to how long of a delay there is between gear shifts. The “firmer” the shift, the shorter the delay. GM sets shifting for smooth shifts, which gives their trucks more of a “car-like” ride. While this might appeal to some customers, the flip side of a smooth shift is that it actually shortens the life of the transmission due to the slip between shifts. We can increase the line pressure to give you a firmer-than-stock shift and reduce the shift timing to eliminate delay between gears. An ideal setting for most customers is midway between “Normal” and “Firm”. Select “Normal” if you have installed a shift kit or other transmission shift modification.

Shift RPM. The RPM at which an upshift occurs at wide open, or full, throttle (WOT). The stock setting for our trucks is usually 5200 RPM. Some customers will want to leave this stock, but we recommend 5600 as the best all around shift point. 5800 RPM is the maximum recommended value for this parameter with stock cam and valve springs, but we can and will set this to any RPM you desire.

Speed limiter. GM trucks come programmed from the factory with a speed limiter set at appx 100 MPH

Most customers choose this to 130MPH, effectively eliminating the speed limiter. We can set this to any speed you request, just be sure your tires are rated for the speed you actually go!

10 or more orders are required by Friday, February 2nd for the GP to go through. We'll start processing orders as soon as we get to 10 so it will be good to place your orders early!

GP Pricing -

westersGM99-00 Wester's Custom Computer Programming; 1999-00 4.8, 5.3, 6.0 **Core Charge Required** $359.99

WestersGM01-02 Wester's Custom Computer Programming; 2001-02 4.3, 4.8, 5.3, 5.7, 6.0 & 8.1 **Core Charge Required** $419.99

WestersGM03-05 Wester's Custom Computer Programming; 2003-05 4.3, 4.8, 5.3, 5.7, 6.0 & 8.1 **Core Charge Required** $449.99

WestersGM06 Wester's Custom Computer Programming; 2006 4.3, 4.8, 5.3, 5.7, 6.0 & 8.1 **Core Charge Required** Core supply may be limited. $499.99

WestersGM07 Wester's Custom Computer Programming; 2007 4.3, 4.8, 5.3, 5.7, 6.0 & 8.1 **Core Charge Required** Core supply may be limited. $499.99

WestersSSR Wester's Custom Computer Programming; 2003-04 SSR w/ 5.3L **Core Charge Required** $499.99

WestersSSR-05 Wester's Custom Computer Tuning; 2005-06 SSR w/ 6.0L **No Cores Available** $449.99

WestersTBSS Wester's Custom Computer Programming; 2006 TrailBlazer SS **Vehicle PCM and TCM Required** $499.99

Core Charge
1999-02 Vehicles $150.00

2003-04 Vehicles $300.00

2005-'07 Vehicles **Limited Availability** $550.00

Note: We will take an authorization for the core amounts listed below. This isn't an actual charge but it just authorizes that amount for us. This will be voided if your core is required to Westers within 30 days. This amount will be charged and not refunded after that period.

Let us know if you have any questions about this tuning.

Orders can be placed online or by giving us a call at 1-877-482-9763.

Have a good day!

My Dixie Wrecked
5,510 Posts
This include OBS 5.7 or just the ones listed?
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