MTM

MTM is probably most known for strapping two engines to an Audi TT in order to set a speed record. Thus, MTM is definitely an "all-out" tuner that I have come to respect due to their innovative/insane projects.

The new Audi S4 AVANT is the most powerful Audi S car out right now. The V6 3.0L supercharged engine will be boosted from 333hp (248kW) to 430hp (320kW) and 380lb-ft (515Nm) of torque. With the new engine upgrades this Audi will run from 0-100km/h (62moph) in just 4.7 seconds!

MTM also offers a custom exhaust kit, bimoto wheels (19- and 21-inch), MTM height adjustable suspension and performance brakes with 380mm discs and 8-piston calipers. Currently, MTM has not announced the specifics of the engine upgrades or any prices on these modifications. We might learn more at the Frankfurt Auto Show in September, though.