Audi B9 A4 Quattro 2.0T Integrated Engineering

The perfect entry point for a stock car, delivering a massive Stage 1 power bump with no additional hardware required. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Please see "fitment notes" in the description for full vehicle information.

Brand:

ES#:

5457714

Mfg#:

IESOWG11

Starting at $184.99 USD

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Lifetime Replacement

Unleash the potential of your build with the Pro version, adding Stage 2 support and aggressive features and high-torque files. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Please see "fitment notes" in the description for full vehicle information.

Brand:

ES#:

5457715

Mfg#:

IESOWG12

Starting at $184.99 USD

Customize

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Lifetime Replacement

Higher RPM limit, faster shifts, optimized shift points, and adjustable launch control Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.

Brand:

ES#:

4758969

Mfg#:

IESOWF1

$728.99 USD

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on orders $49 and up

Lifetime Replacement

The ultimate "no-limits" tier that provides access to every stage and map, including Stage 3 big turbo files for maximum horsepower. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Please see "fitment notes" in the description for full vehicle information.

Brand:

ES#:

5457716

Mfg#:

IESOWG13

Starting at $184.99 USD

Customize

Free Shipping

Lifetime Replacement