Bolt on turbo kit for the 2000-2002 Audi S4 capable of producing over 605hp with supporting modifications. Available with or without inlet pipes for budget minded enthusiasts
Installation Instructions:

Bolt on turbo kit for the 2000-2002 Audi S4 capable of over 770hp with supporting modifications. If hunting down Enzo's, ZR1's and Zonda's is what's on your mind, this is the kit for you.
Installation Instructions:

Bolt on turbo kit for the 993 and 996 Porsche Twin Turbo. These units offer better low end and midrange (how does 630wtq @ 3500 RPM sound) than comparable upgrades with the potential of 800+ hp to the wheels.
Installation Instructions for 996:
(27mb)

Bolt on turbo kit for the 996 Porsche Twin Turbo. Two variants of this turbo are offered, the 3071R and 3076R, both offer huge hp potential (between 900 and 1000+ hp) but maintain daily drivability.
Installation Instructions for 996:
(27mb)