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APR - ECU Upgrade - Audi S4 4.2 V8, B6 and B7

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Please note that your vehicle must be present in order to program your ECU. To schedule an appointment, please feel free to contact us.

The ultimate chip upgrade for your Audi S4 4.2 V8 is available from NGP and APR! After months of long nights and many hours of dyno work at APR we are pleased to offer you chip tuning that is second to none. We have worked hand in hand with many customers to deliver a chip that works. Expect solid increases in low-end torque, improved throttle response and a smoother, more powerful top end.

The APR Audi S4 4.2 V8 ECU upgrade optimizies timing and fueling, and includes all available options for just $599! Some APR chips are available in an octane specific version for the octane of gasoline that you typically run in your car. The power that the chip makes also depends on which ECU is in your vehicle. Multiple programs are available depending upon your ECU and year through EMCS hard chip or DirectPort Programming. Not all ECU's can accept multiple DPP programs, please email for more info.

 Available programs:*

  • Stock
  • 91 Octane
  • 93 Octane
  • 100 Octane
  • Security Lock
  • Throttle body Alignment / Fault Code Erase
  • Anti-theft

 *Not all options are available for all ECU models.

Options include:

Stock Program
91 Chipped Program
93 Chipped Program
Valet Program
Fault Code Erase
Throttle Body Alignment
Security Feature
APR AntiTheft

 All APR chip upgrades use encryption, which serve several purposes. Mainly, it keeps prying eyes out of the software and prevents lesser companies from copying the chip and degrading the product. Also, all APR software is undetectable to a dealers VAG diagnostic tool.

All APR chip software comes with lifetime free updates. There is also a lifetime warranty against defects in the software. All chip upgrades have a 30-day Money Back Guarantee.

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