Hi, Have you spoken to the company that remapped it? you have mentioned its up 70bhp, is this a Stage 1 as this quote seems high? Any reputable remap should still be within Manufacturers tolerances?
On Revo website they recommend clutch upgrade for Stage 2!
REVO Stage 2 Software for a AUDI S3 Saloon 2.0 TSI | Revo Technik