Increase of +40 Horsepower, and +25 Torque! Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
This system will increase power, reduce weight, and provide a legendary exhaust note!
Requires a S4 Style Quad diffuser on non-S-line rear bumper or an S4 rear diffuser on S-line rear bumper.
This system will increase power, reduce weight, and provide a legendary exhaust note!
Requires a S4 Style Quad diffuser on non-S-line rear bumper or an S4 rear diffuser on S-line rear bumper.
This system will increase power, reduce weight, and provide a legendary exhaust note!
Requires a S4 Style Quad diffuser on non-S-line rear bumper or an S4 rear diffuser on S-line rear bumper.
Higher peak figures of 306 HP with 376 FT-LBS of torque - *with APR PLUS limited powertrain warranty*
Call In Or Chat For Best Price! This upgrade must be performed at ECS Tuning's facility in Ohio.
Brand:
ES#:
3690535
Mfg#:
B9A420TSTG1KT1
Ships in 1 day
ON SALE!
SAVE 20%
$1099.99
This product was last offered at the strikethrough price on 09-28-2026
Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.
Lifetime Replacement
