AMD 2.7T RS4 STAGE 4
Large Turbo conversion - Two Hybrid turbos, Flowed cylinder heads, Uprated sports manifolds, Ceramic coated pistons, ECU Remap, Milltek Stainless Steel Exhaust and Milltek Hi flow 200 cell Sports cats to include rolling road time, before and after power and torque plots
Up to + 150bhp and 180lbs/ft Exc. VAT - £11875.00 (Fitted)
Inc. VAT - £13953.13 (Fitted)
So 525 BHP output, maybe what the blue one had