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Audi 4M SQ8 Quattro 4.0T

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Audi 4M SQ8 Quattro 4.0T Performance Tunes & Software

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APR Plus ECU Upgrade - 4.0T EA825 V8 (SQ)

ES#4418359 - ECU40TEA825SQAPR - APR Plus ECU Upgrade - 4.0T EA825 V8 (SQ) - Max gains of +191 AWHP and +163 AWFT-LBS and a Limited Powertrain Warranty - APR - Audi

Max gains of +191 AWHP and +163 AWFT-LBS and a Limited Powertrain Warranty Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
4418359
Mfg#:
ECU40TEA825SQAPR
In Stock
ON SALE! SAVE 10%
$3999.99

This product was last offered at the strikethrough price on
07-31-2026

$3599.96 USD
This product is lifetime replacement eligible Lifetime Replacement

APR ECU Upgrade - 4.0T EA825 V8 (SQ)

ES#4418358 - ECU-40T-EA825-SQ - APR ECU Upgrade - 4.0T EA825 V8 (SQ) - Max gains of +191-268 AWHP and +163-262 AWFT-LBS depending on octane - APR - Audi

Max gains of +191-268 AWHP and +163-262 AWFT-LBS depending on octane Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
4418358
Mfg#:
ECU-40T-EA825-SQ
In Stock
ON SALE! SAVE 10%
$1528.99

This product was last offered at the strikethrough price on
07-31-2026

$1376.06 USD
This product is lifetime replacement eligible Lifetime Replacement

AP3 OBD2 UNIVERSAL CABLE

ES#4415272 - AP3-OBDII-CABLE- - AP3 OBD2 UNIVERSAL CABLE - Tidy up your cabin with the COBB OBDII Universal Cable! - CobbTuning - Audi BMW Volkswagen Porsche

Tidy up your cabin with the COBB OBDII Universal Cable!

Brand:
CobbTuning - Corporate Logo
ES#:
4415272
Mfg#:
AP3-OBDII-CABLE-
In Stock
$85.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Burger Motorsports JB4 Tuner

ES#4620151 - JB4-EA825-40TT - Burger Motorsports JB4 Tuner - Plug & play tune with gains up to 120hp/130lb-ft. - Burger Motorsports - Audi

Plug & play tune with gains up to 120hp/130lb-ft.

Brand:
Burger Motorsports - Corporate Logo
ES#:
4620151
Mfg#:
JB4-EA825-40TT
Ships on Aug 26, 2026
$1199.00

This product was last offered at the strikethrough price on
05-21-2026

$879.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Tunes & Software

If you've upgraded your car or just want a bit more power from your stock vehicle, performance engine software helps maximize your car's potential by letting it know just where the limits are. Improve your driving experience with upgraded performance engine software from our selection of elite software tuners.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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