Is it worth tuning a B9 A4?

how much power can be produced from this popular German 2.0T quattro?

Just installed the ESC Tuning B9 A4 Rear Diffuser - Gloss Black

ECS - 028802ecs01KT - Audi B9 A4/S4 Front Lip Spoiler - Gloss Black

Is it worth tuning a B9 A4?

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Audi B9 A4 S-Line Pre-Facelift Rear Diffuser - Gloss Black

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AWE Tuning Audi B9 A4/A5 SwitchPath™ Exhaust

Audi A4 B9 Tuning Remaps, Car Accessories, Car Workshops

AWE Tuning Audi B9 A4 Touring Edition Exhaust Dual Outlet - Chrome

CHIP TUNING FILE AUDI A4 B9 2.0TFSI 252HP -STAGE 2 AND STAGE 3