« Reply #13 on: 06 October 2011, 00:01 »
I'd go for the k04-001 there is only £50 difference and upgrading from a k03.
You would need custom mapping for the K04-001 along with a downpipe and better intercooler to get decent results IMO

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2003 1.8T GTI 180 - APR Stage I, S2000 Filter, R-Tech Supersize TIP, Bilstein B12 Suspension, 18" OZ Superleggera, Recaro Heated Leathers, US Spec Rear Lights, N249/SAI/PCV Delete
1.8T AUQ - 241bhp & 286 ft-lb
R-Tech Map, Forge FMIC, SFS Oversized TIP, Ported Manifold, Milltek Turboback non res exhaust, Forge 007p, N249 & N112 delete, SAI delete, S2000 Air Filter, Sachs clutch & Lightweight Flywheel