
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
For Your Every Summer RSVP, with Code: SUMMER15
Description
APR Ultracharger Throttle Body Upgrade - 3.0 TFSI - B8/B8.5 S4/S5/A4/A5This is the APR Ultracharger System. The APR Ultracharger System dramatically increases horsepower and torque, and maximizes the power potential of the 3. 0 TFSI. It removes a massive pre supercharger restriction, allowing uninterrupted airflow into the supercharger for up to an astonishing 542 HP with APR's Supercharger and Crank Pulleys. Stunning carbon fiber and smooth cast aluminum adorn the system, creating a clean and simple install that looks
This is the APR Ultracharger System.The APR Ultracharger System dramatically increases horsepower and torque, and maximizes the power potential of the 3.0 TFSI. It removes a massive pre-supercharger restriction, allowing uninterrupted airflow into the supercharger for up to an astonishing 542 HP with APR's Supercharger and Crank Pulleys. Stunning carbon fiber and smooth cast-aluminum adorn the system, creating a clean and simple install that looks just as powerful as it is. Finally, APR's innovative Ultracharger ECU Upgrade delivers a smooth and exciting driving experience, and it is included as a free upgrade to all who own an APR Stage II ECU Upgrade.
The Restriction
The factory throttle body is a massive power-robbing restriction. Its cross-sectional area is ~25% smaller than the supercharger's inlet, causing airflow to plummet at high supercharger speeds. It's responsible for losses as high as 33 HP!
The Solution
The APR Ultracharger Throttle Body is huge. Its cross-sectional area is ~28% larger than stock, and an additional 5% larger than the supercharger's inlet. It completely eliminates the throttle body as a point of restriction and allows for maximum airflow into the supercharger.
The APR Ultracharger ECU Upgrade
APR's incredible Ultracharger ECU Upgrade is why it all just works. It delivers an outstanding driving experience, packed with a smooth daily driving, thrilling wide open throttle acceleration, and unmatched performance. It's our most advanced 3.0 TFSI software to-date, and it's included as a free upgrade to all who own an APR Stage II ECU Upgrade.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 941 reviews
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Product Reviews
★★★★★ 5
Cute and Comfy
Special Size Type: Infant (0-12 Months), Size: 6-9 Months Infant, Color: Matthew Navy
My infant wore these for a few months, he’s 9 months now and they are too snug for 6-12 months size. We really liked the comfort and quality.
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Reviewed in the United States on July 16, 2022
★★★★★ 5
Little Blues
Special Size Type: Infant (0-12 Months), Size: 9-12 Months Infant, Color: Matthew Navy
Color was wonderful. The shoe is good quality. Loved the style. Cannot wait to see her wear them
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Reviewed in the United States on August 12, 2024
★★★★★ 5
Great summer shoe for 8 month old.
Amazing fit for summer baby attire. Fits true to size, soft, easy on easy off. The Velcro is tearing up hos car seat though, because some rough surface is exposed.
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Reviewed in the United States on June 27, 2018
★★★★★ 1
Mala calidad
La calidad no es buena vino deshilada y parece que lo enviaron usado porque se ve pisado
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Reviewed in the United States on February 3, 2025
★★★★★ 2
Unsafe Buckle - Risky for tiny fingers
Special Size Type: Toddler (1-4 Years), Size: 12-18 Months Toddler, Color: Stuart Navy Canvas
I at first really liked these sandals, however once my son started learning how to undo the Velcro strap, his fingers began to catch painfully in the decorative buckle. Now I see the sandals as an unsafe option and have subsequently tossed them.
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Reviewed in the United States on June 2, 2026