Cart Continue shopping “Audi B9 S4 / S5 / SQ5 3.0T ECU Software Upgrade” has been added to your cart.Remove itemThumbnail imageProductPriceQuantitySubtotal × Mercedes Benz GL63 AMG Custom In-House Dyno Tuning $2,674.99 Mercedes Benz GL63 AMG Custom In-House Dyno Tuning quantity $2,674.99 (incl. tax) × Audi B9 S4 / S5 / SQ5 3.0T ECU Software Upgrade $1,283.99 Audi B9 S4 / S5 / SQ5 3.0T ECU Software Upgrade quantity $1,283.99 (incl. tax) Coupon: Apply coupon Update cart Cart totalsSubtotal$3,958.98 (incl. tax)Service / Financing / Processing$169.45Total$4,128.43 (includes $270.09 Tax)- Proceed to checkout