Stertman Motorsport ECU Software Upgrade For Audi A4/A5 2.0T (B9)

Stertman Motorsport

We are pleased to offer Stertman Motorsport performance software for your B9 A4/A5. With over 20 years of experience in tuning VAG & BMW platforms, along with advanced development and diagnostics equipment, Stertman Motorsport is one of the premier software tuners in the world. Each tune is developed and rigorously tested in house, both in a controlled dyno environment as well as on rolling roads.

Stock Power: 252 HP / 273 TQ

STM Stage 1: 300 HP / 325 TQ

STM Stage 2: 320 HP / 340 TQ

STM Stage 3: 400 HP / 375 TQ

Stage 1 tuning is for vehicles that are otherwise stock, or with basic modifications such as air intake or catback exhaust.

Stage 2 tuning requires a decat or high flow downpipe, upgraded intake or air filter and upgraded intercooler.

Stage 3 tuning requires the above as well as an upgraded turbocharger such as Turbo Systems hybrid.

Numbers quoted are for 91-93 octane pump fuel.

This is a complete ECU software upgrade, which will write modified tables for load, fuel, ignition, boost pressure and more. At this time, your ECU must be sent in to our facilities for tuning, or you can make an appointment to bring the vehicle to our location for tuning. Typical turnaround on send-in ECU's is 1 business day.

At this time, this software can only be flashed at our facility.