B9-B9.5 S4/S5/SQ5 TCU
From $950
B9-B9.5 RS Model TCU
From $950
B9-B9.5 RS4/RS5 ECU
From $1,450
B9-B9.5 S4/S5/SQ5 ECU
From $1,300
Audi Tuning Dongle
$379.99
B9-B9.5 A4/A5/Q5 ECU
From $1,150