AUDI S4 & S5 B9 | Stage 1 bmw-g87-m2-2023-2025-esr5288709 Simple Installation: Comes with everything

Simple Installation: Comes with everything needed for a hassle-free

Massive low-end torque and immediate throttle input

and more alive—delivering enhanced throttle response

A whopping 39% increase in flow rate compared to the stock setup

WestTuned’s Stage 1 ECU calibration unleashes the N74’s hidden potential

AUDI S4 & S5 B9 | Stage 1 bmw-g87-m2-2023-2025-esr5288709 Simple Installation: Comes with everythingThe Audi S4 and S5 B9 bring refined turbocharged performancebut the stock ECU tune leaves plenty on the table. WestTuneds Stage 1 ECU calibration unlocks the full potential of the 3. 0L TFSI V6, giving you quicker throttle, stronger torque, and relentless accelerationwithout compromising OEM comfort or drivability. What Youll Feel: Stronger midrange torque and improved turbo spool Faster throttle response and better top end performance Smooth,