034Motorsport is proud to offer our complete Stage 3 Turbo Kit for the B5 Audi S4 and C5 Audi A6 & Allroad! While capable of doubling the stock 2.7T's output, this turbo kit does not sacrifice the smooth power delivery and factory drivability.

Hardware:

This 2.7T Stage 3 Turbo Kit is centered around a pair of Genuine Borg Warner Audi RS4 K04 Turbochargers, and includes only the highest quality supporting components designed, manufactured, and tested by 034Motorsport. 

Software & Fueling:

The 034Motorsport 2.7T Stage 3 ECU Upgrade uses the latest generation of Bosch EV14 550cc Fuel Injectors, as well as the updated Hitachi 2.7T MAF Sensor to ensure adequate fueling and proper air metering. The ECU upgrade for this kit was developed in-house at 034Motorsport on our chassis dynamometer, and thoroughly tested on the dyno, street, and track to ensure optimal performance, safety, and reliability.

The 034Motorsport Stage 3 ECU Upgrade retains full electronic boost control via the stock N75 valve. The secondary oxygen sensors and EGT sensors can be coded out as desired.

Please Note: If your vehicle is an early 2000 model with a Bosch MAF Sensor, it will need to be converted to the later Hitachi MAF Sensor. You can use our Plug in 2.7T Bosch to Hitachi MAF Sensor Conversion Kit for this. The BEL engine will require aftermarket or stock downpipes from an APB engine.

Please Note: You must send us your ECU in order for us to perform the 034Motorsport Stage 3 ECU Upgrade. If you would like us to send you a tuned ECU before you send in yours, then we will charge you a $300 core charge, which will be refunded once we receive your stock ECU.