4-0 TFSI S8 ECU Tune
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4-0 TFSI S8 ECU Tune

Weistec
4L_TFSI_S8_ECU_Tune
In stock
Tuning
$2,499.00
See product description below.

4-0 TFSI S8 ECU Tune
Weistec Horsepower 689
Weistec Torque 738
Manufacturer Weistec
Street legal in all the US States No
Engine Family 4.0L TFSI
Stock Horsepower 576
Stock Torque 600

ECU Tuning Process: How do I get my ECU tuned?

The 4.0L TFSI engine is a potent and capable powerplant in addition to being paired to the famous AWD systems Audi/Porsche are known for.  Through rigorous testing on both the street and dyno, the Weistec 4.0 TFSI ECU Upgrade for the 4.0 Liter Twin Turbo V8 engines reliably extracts massive gains in the mid range of the powerband as well as substantial gains in the top end making it a top performer in all driving situations.  

Toggle between W.1 and W.2 above to see various levels of power gains achievable with our tuning. 



ECU Tuning Process: How do I get my ECU tuned?

Key Features:

  • Increased Boost
  • Optimized Fueling
  • Optimized Ignition Timing
  • Removed Speed Limiter
  • Increased Cruise Control Speed Limit
  • Removed Neutral Rev Limit
  • Optional Burble
*Power gains vary based on model, modifications, fuel, and running conditions.
year make model trim engine
2018 Bentley Flying Spur S (D1) Twin Turbo 4L V8 (TFSI)
2017 Bentley Flying Spur S (D1) Twin Turbo 4L V8 (TFSI)
2020 Bentley Flying Spur Base (MSB) Twin Turbo 4L V8 (TFSI)
2019 Bentley Flying Spur Base (MSB) Twin Turbo 4L V8 (TFSI)
2018 Bentley Flying Spur Base (D1) Twin Turbo 4L V8 (TFSI)
2017 Bentley Flying Spur Base (D1) Twin Turbo 4L V8 (TFSI)
2016 Bentley Flying Spur Base (D1) Twin Turbo 4L V8 (TFSI)
2015 Bentley Flying Spur Base (D1) Twin Turbo 4L V8 (TFSI)
2017 Bentley Continental GT S (D1) Twin Turbo 4L V8 (TFSI)
2016 Bentley Continental GT S (D1) Twin Turbo 4L V8 (TFSI)
2015 Bentley Continental GT S (D1) Twin Turbo 4L V8 (TFSI)
2014 Bentley Continental GT S (D1) Twin Turbo 4L V8 (TFSI)
2014 Bentley Continental GTC Base (D1) Twin Turbo 4L V8 (TFSI)
2013 Bentley Continental GTC Base (D1) Twin Turbo 4L V8 (TFSI)
2017 Bentley Continental GT Base (D1) Twin Turbo 4L V8 (TFSI)
2016 Bentley Continental GT Base (D1) Twin Turbo 4L V8 (TFSI)
2015 Bentley Continental GT Base (D1) Twin Turbo 4L V8 (TFSI)
2014 Bentley Continental GT Base (D1) Twin Turbo 4L V8 (TFSI)
2013 Bentley Continental GT Base (D1) Twin Turbo 4L V8 (TFSI)
2018 Audi S8 Plus (D4) Twin Turbo 4L V8 (TFSI)
2017 Audi S8 Plus (D4) Twin Turbo 4L V8 (TFSI)
2016 Audi S8 Plus (D4) Twin Turbo 4L V8 (TFSI)
2016 Audi S8 Base (D4) Twin Turbo 4L V8 (TFSI)
2015 Audi S8 Base (D4) Twin Turbo 4L V8 (TFSI)
2014 Audi S8 Base (D4) Twin Turbo 4L V8 (TFSI)
2013 Audi S8 Base (D4) Twin Turbo 4L V8 (TFSI)
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All products are shipped via UPS or FedEx SIGNATURE REQUIRED (unless otherwise specified). Please allow up to 48 Hours to process and ship your order; if you have a time sensitive shipment please give us a call to ensure there are no delays. Special arrangements may need to be made for international orders and oversize packages.

Please be aware that 3-day, 2-day and next day air shipping does NOT include the weekends. For example an order with 2-day air shipping that ships out on a Friday will be delivered on Tuesday.

In order to keep costs down and provide parts at competitive prices, many items are shipped directly from one of our authorized Rennwerks shipping locations. We cannot guarantee stock on these items until the order is placed. We will notify you if an item is not available to ship immediately.

While we strive to ensure accuracy of all orders that are shipped on extremely rare occasions boxes are mislabeled and/or wrong parts are shipped. Once you have received your order be sure to CHECK the parts for accuracy prior to starting your installation!

RETURNS & DAMAGED SHIPMENTS

All items to be returned, whether flawed or incorrect merchandise can be returned within 30 days of the original ship date. ALL returns may be subject to a 20% restocking fee.

TO RETURN AN ITEM

Call customer service at 1-408-800-4485 from 9:00 to 5:30 PST, Monday through Friday. They will issue you a Return Material Authorization Number (RMA#). Display this RMA# visibly on the outside of the return packaging. Enclose a copy of the original invoice with the returned merchandise. All returns must be pre-paid shipping and fully insured. We do not accept collect shipments or unauthorized returns. When the return is due to our error, we will refund the pre-paid freight charges and immediately exchange the item(s) or provide a refund.

The following items have a NO RETURN/NO REFUND policy:

  • Voltage Regulators
  • Voltage Cutouts
  • All Electrical Items
  • Books & Publications
  • Videos
  • Posters
  • Glass Patterns
  • Wood Items
  • Computer Software
  • Foreign Shipments
  • Special Orders

DAMAGED SHIPMENTS

Upon receipt of an obviously damaged package, you have the option to refuse delivery and the order will be returned to Rennwerks. Or you can receive the order-making, not of visible damage in writing to the carrier. If upon inspection of the parts you find damage due to the carrier's handling you then have 48 hours to file a claim with the carrier. DO NOT RETURN THE DAMAGED PARTS TO RENNWERKS. Keep the package and parts as close as possible to the condition you received them. Without the package, the carrier will void your claim. Claims for shortages due to carrier negligence must be made within 5 working days of receipt of merchandise.

FOR DAMAGED SHIPMENTS CONTACT THE SHIPPER DIRECTLY

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