My view is 2.5 for road, 2.1 or 2.35 (if you have deeper pockets for track)
My 2.5 is great on the road but on track it's too fragile and doesn't like to be revved that hard. Getting a 2.5 pinned or closed would increase safety margin but the engine would still be about low down torque not really a track setup.
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2005 Spec B 6MT - KiDO tuned (~270Bhp)
Custom exhaust - Cosworth filter - Samco Intake - Tints - Bilstein B8/B6 & STI springs - SuperPro ALK - Whiteline positive shift kit, rack mounts, rear adjustable camber bushes, front ARB mounts & strut brace, 20mm rear ARB with AVO mounts, - Hardrace Gearbox and pitch mounts - Prodrive PFF7's - Front Brembos - Kenwood CarPlay - 1/2 carbon grille - STI front splitter
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