The heart of the Audi/Volkswagen 1.8T Turbo Upgrade Kit is the higher output K04 turbo, manufactured by 3K Warner GmbH, an O.E. supplier to Audi and VW. Neupseed includes a high performance P-Chip that is programmed to take advantage of these serious bolt-on performance parts. Boost pressure is raised to a maximum of 15psi, ignition timing and air/fuel ratios are modified, and the rev-limiter and top speed governor are raised. Your engine control computer must be sent to Neuspeed for the P-Chip installation. However, no other modifications are required to install the K04 turbocharger. In addition, the Audi/Passat kit includes Beru UltraX 4-electrode spark plugs, a 180º F fan switch, a 5-bar fuel pressure regulator, EGT gauge and thermocouple, and all required gaskets and hardware. Other kits vary.

Application	Part No.	Details
Audi A4 1.8T, Passat B5 1.8T	48.10.02
Audi TT, VW Beetle, Golf IV, Jetta IV with 1.8T	48.10.04	$CALL$
A high performance exhaust system must be used with the K04 upgrade kit. Neuspeed offers the following components as add-on options: · — Extruded Honed factory exhaust manifold. —
Audi A4 1.8T, Passat B5 1.8T	48.10.03
Audi TT, VW, Beetle, Golf IV, Jetta IV with 1.8T	48.10.05
— T304 stainless steel, cat-back exhaust. —