Unleash the potential of your build with the Pro version, adding Stage 2 support and aggressive features and high-torque files.
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The perfect entry point for a stock car, delivering a massive Stage 1 power bump with no additional hardware required.
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Features a low-profile integrated solenoid to make it shorter and more compact than even the factory diverter, ensuring it will fit the tightest applications.
ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
5470739
Mfg#:
T9381SD
In Stock
Limited Qty Sale
$252.99
This product was last offered at the strikethrough price on 06-24-2026
Designed with extreme performance in mind and manufactured from billet aluminum and high-durometer Density Line rubber for better ride characteristics than polyurethane.
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Brand:
ES#:
4846365
Mfg#:
034-509-0095
Ships in 3 Business Days
ON SALE!
SAVE 10%
$677.00
This product was last offered at the strikethrough price on 06-28-2026
Unleash up to 357HP/396TQ by transforming your Audi B9 A4/A5 with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features!
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Dyno tested and produced significant power increases of +23 HP / +28 lbs. x ft. torque
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Features CAN-Bus connectivity for more advanced tuning — gain up to 30whp and 45lb-ft. of torque
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Not for sale or use in the state of California. Fits 190hp models only
Flow without limits: The ultimate bolt-on upgrade for Audi B9 power, sound, and reliability.
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Brand:
ES#:
5457149
Mfg#:
IETPCK7
Ships in 5 Business Days
ON SALE!
SAVE 10%
$379.99
This product was last offered at the strikethrough price on 06-25-2026
Proprietary tune box designed specifically for the EA888.3 2.0L TFSI with gains of +65 Horsepower / 70 ft-lb of Torque!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! Compatible with 2017-2020 model years only
Proprietary tune box designed specifically for the EA888.3 2.0L 45 TFSI with gains of +30 Horsepower / 30 ft-lb of Torque!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! Compatible with 2021+ model years only
Connects the oil filter housing to the top of the turbo
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Brand:
ES#:
4907740
Mfg#:
06L145778T
Ships in 4 Business Days
ON SALE!
$78.99
This product was last offered at the strikethrough price on 06-29-2026
3.15" T304 stainless construction, offers increased hp/tq throughout the powerband
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For vehicles up through 2020
Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.
Lifetime Replacement
