APR ECU Upgrade Kit Audi RS6 Avant display

APR

APR ECU Upgrade Kit 21-24 Audi RS6 Avant (C8)-ECU-40T-EA825-C8

$899.96
SKU: ECU-40T-EA825-C8

APR ECU Upgrade Kit 21-24 Audi RS6 Avant (C8)-ECU-40T-EA825-C8

MCQUEEN

190 South McQueen Road
Suite 109
Gilbert AZ 85233
United States

+14806332929

STATE OF CALIFORNIA CONSUMER WARNING

Expect massive gains with up to 685-767 HP and 731-804 FT-LBS of torque on tap, depending on octane, from this simple software upgrade for the RS6 and RS7 4.0 TFSI V8 engine with the Bosch MG1 ECU!

APR's ECU Upgrades are the best dollar-per-horsepower modification one can make to improve engine performance. The upgrades dramatically increase horsepower and torque, making for an exceptionally quicker and more exciting vehicle. This is made possible through APR's optimization of the factory engine management system to take full advantage of the engine's capabilities, without needing any end user adjustment. The ECU Upgrades are available with various features and supported octane levels and each stage is compatible with most typical bolt-on modifications. The software is installed to the vehicle's factory ECU through the OBD-II port once the ECU is unlocked, resulting in a clean and headache-free install.

FITMENT DETAILS:
  • Delivers up to 685-767 HP with 731-804 FT-LBS depending on octane
  • Max gains of +112-210 AWHP and +145-225 AWFT-LBS depending on octane
  • Supports 91 AKI, 93 AKI, 100 AKI, and 104 AKI fuel grades
  • Optional factory term limit matching limited powertrain warranty with APR Plus
  • Quicker acceleration
  • Speed limiter removed
  • Standing RPM soft limiter increased
  • Left-foot braking / brake boosting added
  • Properly rescaled performance gauges
  • Optimized thermal management and protection
  • Optimized launch control strategy for faster response
  • Optimized driveline protection during launch
  • No hardware required (Software only)
  • Supports standard bolt on modifications
  • Eliminated the need for a TCU upgrade to achieve full torque
  • Free lifetime updates
  • Direct OBDII port flash (No ECU removal)

Unlock hidden horsepower and torque with our performance tuning software for your vehicle's Engine Control Unit (ECU).

Vehicle Fitment:
  • 21-24 Audi RS6 Avant 

Shipping & Returns

SHIPPING POLICY
There is a chance that your cart will display no shipping charges. Certain items populate a standard shipping rate, others are advertised as free shipping to the lower 48, and others (often multiple parts or larger orders) may not show a rate. There is nothing more to do on your end if it is free or flat-rate shipping.

If your order does require a shipping cost/option, our shipping department will determine the shipping charges, and we will email you the cost/options for your order to ship out. Once you receive that email, there will be a link to pay for the charges, or you can cancel the order and be fully refunded.

OFFERS OF FREE SHIPPING:
All free ground shipping offers only apply to shipping addresses in the continental United States. This notification will appear above the product information and on the cart page.

FLAT RATE GROUND SHIPPING:
Some products have a standard ground shipping policy if you require the product faster, please notify us in the notes section during checkout.

If you have special shipping requirements, please contact our sales department. Email us help@sdhqoffroad.com

PROCESSING YOUR ORDER:
If shipping costs need to be calculated/added, you will be emailed with an updated link to your order. Your updated order will include your order's shipping costs and be your original order with the letter "A" at the end. While checking for updates on your order, please add an "A" to the end of your order number, as your order number without the "A" will show canceled since it has been superseded.

FIBERGLASS SHIPPING POLICY:
Our shipping department takes the same time and effort in packaging your products as our engineers do in designing them. However, damage can still occur in shipping. Most of these damaged items can be easily repaired during install and or in paint prep. If this is not the case, the buyer must inspect the packaging and the products carefully upon receiving them, then accept the shipment and if need be, notate any damages and irregularities, such as crushed, torn, punctured, or broken parts on both the packaging and the product, on the freight bill or receipt at the driver’s presence. A signed receipt without any notation releases the carrier as well as SDHQ from any further damage claim. Discovery of damages after a clear delivery becomes the responsibility of the customer. The buyer must notify SDHQ of any damages within 24 hours. In cases of damage with proper notion on receipt, the carrier will determine whether to pay for the repair cost or replacement value of the damaged goods after damage inspection. Replacement value is the amount the buyer paid to SDHQ and is not negotiable. All disputes about the settlement amount shall be addressed with the carrier. SDHQ, under no circumstances, shall be liable for the damaged product or for subsequent settlement of the claim with the carrier.

POWDER COATED ROCK SLIDERS SHIPPING POLICY: While we pack with care, we advise against shipping powder-coated sliders due to the risk of scuffs/scratches during transit. Any shipping-related damage isn't covered by SDHQ.

GOOSE GEAR SHIPPING POLICY: All Goose Gear products are made-to-order. Once your order is placed, it cannot be cancelled or refunded. By checking this box, you acknowledge and agree to these terms. Thank you for understanding the unique nature of our custom manufacturing process.

RETURNS:
Some items may be eligible to be returned if returned as new within 30 days of shipping, with a 20% re-stocking fee. If eligible for return, the return amount will be for store credit. There are NO returns after 30 days from the date of receipt. Freight is nonrefundable. Refunds will be given on parts only and exclude labor or installation charges, shipping, or any other charges. All parts must be returned in the original package, cannot be damaged or installed, and must be in original condition.

For further info on our return policy, please visit the Online order returns page.

Shipping & Returns

SHIPPING POLICY
There is a chance that your cart will display no shipping charges. Certain items populate a standard shipping rate, others are advertised as free shipping to the lower 48, and others (often multiple parts or larger orders) may not show a rate. There is nothing more to do on your end if it is free or flat-rate shipping.

If your order does require a shipping cost/option, our shipping department will determine the shipping charges, and we will email you the cost/options for your order to ship out. Once you receive that email, there will be a link to pay for the charges, or you can cancel the order and be fully refunded.

OFFERS OF FREE SHIPPING:
All free ground shipping offers only apply to shipping addresses in the continental United States. This notification will appear above the product information and on the cart page.

FLAT RATE GROUND SHIPPING:
Some products have a standard ground shipping policy if you require the product faster, please notify us in the notes section during checkout.

If you have special shipping requirements, please contact our sales department. Email us help@sdhqoffroad.com

PROCESSING YOUR ORDER:
If shipping costs need to be calculated/added, you will be emailed with an updated link to your order. Your updated order will include your order's shipping costs and be your original order with the letter "A" at the end. While checking for updates on your order, please add an "A" to the end of your order number, as your order number without the "A" will show canceled since it has been superseded.

FIBERGLASS SHIPPING POLICY:
Our shipping department takes the same time and effort in packaging your products as our engineers do in designing them. However, damage can still occur in shipping. Most of these damaged items can be easily repaired during install and or in paint prep. If this is not the case, the buyer must inspect the packaging and the products carefully upon receiving them, then accept the shipment and if need be, notate any damages and irregularities, such as crushed, torn, punctured, or broken parts on both the packaging and the product, on the freight bill or receipt at the driver’s presence. A signed receipt without any notation releases the carrier as well as SDHQ from any further damage claim. Discovery of damages after a clear delivery becomes the responsibility of the customer. The buyer must notify SDHQ of any damages within 24 hours. In cases of damage with proper notion on receipt, the carrier will determine whether to pay for the repair cost or replacement value of the damaged goods after damage inspection. Replacement value is the amount the buyer paid to SDHQ and is not negotiable. All disputes about the settlement amount shall be addressed with the carrier. SDHQ, under no circumstances, shall be liable for the damaged product or for subsequent settlement of the claim with the carrier.

POWDER COATED ROCK SLIDERS SHIPPING POLICY: While we pack with care, we advise against shipping powder-coated sliders due to the risk of scuffs/scratches during transit. Any shipping-related damage isn't covered by SDHQ.

GOOSE GEAR SHIPPING POLICY: All Goose Gear products are made-to-order. Once your order is placed, it cannot be cancelled or refunded. By checking this box, you acknowledge and agree to these terms. Thank you for understanding the unique nature of our custom manufacturing process.

RETURNS:
Some items may be eligible to be returned if returned as new within 30 days of shipping, with a 20% re-stocking fee. If eligible for return, the return amount will be for store credit. There are NO returns after 30 days from the date of receipt. Freight is nonrefundable. Refunds will be given on parts only and exclude labor or installation charges, shipping, or any other charges. All parts must be returned in the original package, cannot be damaged or installed, and must be in original condition.

For further info on our return policy, please visit the Online order returns page.

Quality

We pride ourselves on offering only top-tier products, handpicked through strategic partnerships with the industry's elite.

When you choose us, you're investing in unparalleled quality and craftsmanship.

Learn more about what 'SDHQ Built' means to us here.

Quality

We pride ourselves on offering only top-tier products, handpicked through strategic partnerships with the industry's elite.

When you choose us, you're investing in unparalleled quality and craftsmanship.

Learn more about what 'SDHQ Built' means to us here.

Secure Payment

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

We accept payments with :
Visa, MasterCard, Shop Pay, PayPal, Apple Pay, Discover and more.

Secure Payment

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

We accept payments with :
Visa, MasterCard, Shop Pay, PayPal, Apple Pay, Discover and more.

find everything you need?

SDHQ Built Products

Discover the robust, American-made range of SDHQ products, where superior quality meets outstanding performance. Crafted at our headquarters, our gear is built to enhance your driving experience.

explore

we may have just the thing you're looking for

A-Pillar Light mounts to fit any light for most models of 4x4 trucks.

A-Pillars

Switch Pro Panels to control all onboard lights and accessories.

Switch Pros

Inexpensive ABS Guards that can save you from expensive repairs.

Abs Guards

American-made Excellence

SDHQ: Built for Adventure

Experience American-made excellence from SDHQ, your fellow off-road enthusiasts. We take pride in crafting high-quality, custom products right at our headquarters for unparalleled performance and durability.

Check out what 'SDHQ Built' means for us as well as our customers:

sdhq built