The APR T2100004 K-04 Turbo Kit includes a Borg-Warner K04 turbo, four OEM Audi TT 225 fuel injectors, the compressor inlet O-ring, three turbo to downpipe studs, one manifold to turbo gasket, and one turbo to cat gasket. This kit also includes the APR K-04 chip programming for the Audi B6 A4 1.8T (a $699 value!). This kit is a straight forward turbo swap that makes a big difference in the power output of the car.
The APR K-04 kit makes solid gains in both horsepower and torque. With no other mods than a full exhaust, the kit made 247hp/286lb-ft on 93 octane gas. Although an exhaust is not required, it is highly recommended.
The software for this kit is also available separately for current APR Stage I/I+ or II/II+ customers for $199 or $699 for customers that do not currently have an APR tune on their car.
APR T2100004 Vehicle Fitment:
2002 Audi A4 1.8T
2003 Audi A4 1.8T
2004 Audi A4 1.8T
2005 Audi A4 1.8T
2005.5 Audi A4 1.8T
This kit requires a high flow catalytic converter.
APR products are warranted to be free from defects in the materials and workmanship prior to installation. This warranty does not cover labor, misuse, faulty installation, failure of related parts or parts purchased other than from APR, LLC.