audi A4 power
apr_logo.gif2Bennett is an official distributor for Audi Performance and Racing upgrades.
Stage I ECU Upgrade

Stage I software gives you an honest 209 horsepower and 236 ft.lbs. of torque. This software is the ultimate upgrade for the B6 A4 and gives it just the extra edge these cars lack from the factory, without pushing the limits. With factory like smoothness and drivability, the new power will fill the void in an otherwise excellent car.

Stage I+ ECU Upgrade

Stage I+ software, along with larger fuel injectors, provides even more horsepower and torque, raising the output to 229 and 271, respectively. While not an extreme upgrade, the Stage I+ gives the A4 a bit more performance without sacrificing drivability or smoothness. For optimal results, our cat-back exhaust system is highly recommended with the use of the Stage I+ system.





Multiple Programable





4 th



209hp/ 236lb ft

215hp/245 Lb ft







Stage1+ with injectors


229 / 271

235 / 275







APR Tuned

B6 A4 1.8T K04 Turbo Upgrade

Many said it would never happen, but APR is now proud to release our K04 upgrade kit for the B6 Audi A4 1.8T. Our kit includes the K04 turbo, the compressor inlet O-ring, three turbo to downpipe studs, one manifold to turbo gasket, four Bosch fuel injectors, and one turbo to cat gasket. This kit is a straightfoward turbo swap that makes a big difference in the power output of the car.

This kit makes solid gains in both horsepower and torque. With no other mods than an APR Exhaust, the kit made 247hp/286lb-ft on 93 octane gas. Although the exhaust is not required, it is highly recommended.

If you are currently an APR Stage I/I+ or II/II+ customer and purchase a K04 upgrade, you will receive all EMCS options for free.

The software for this kit is also available separately for current APR Stage I/I+ or II/II+ customers for $199 or $699 for new customers.

audi turbo upgrade
2002-2005 A4 1.8T With injectors T2100003 $2299.
2002-2005 A4 1.8T Without injectors T2100004 $1799.

APR Tuned Stage 3+

2002-2005 1.8T Stage 3 + T3100010 $5299.
a4 stage3

Stage III+ kit, the ultimate turbo system upgrade for the 2002-2005 A4 1.8T. This kit is capable of 340 horsepower and 332 foot-pounds of torque at the flywheel on 93 octane gas, while retaining stock-like drivability. The highlights of the kit include the following:

* APR Investment Cast Inconel Exhaust Manifold
* Honeywell/Garrett Ballistic Series Ball-Bearing Turbocharger
* Larger APR designed Mass Airflow Sensor Housing
* APR Custom Cast Silicone Intake Hoses
* APR High Flow Fuel Injectors
* All Associate Plumbing and Hardware