How about Kleeman tune? This is what i got back:

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We have Boost kit and cams + LSD for the rear axle.

32-K1: Boost kit, consisting of a revised ECU software and a redesigned crank pulley. Up to 404 HP and 500 Nm (370 lb-ft) of torque.

€ 1695,00



+ a set of super sport camshafts. Up to 425 HP and 530 Nm (415 lb-ft) of torque.

€ 1795,00

Prices excl. 25% VAT and shipping/install
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They do say "up to" and without the intake i suppose it wont really get that much, aside from that its not the power on the wheels... I think?