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I've tried both, and honestly stock airbox is fine, Ive run 18psi with the stock airbox.
DCI will be fine with the cold weather at the moment, but come summer time you will notice a drop in performance IMO
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2011 BMW M3 - Mineral White - VF620 Supercharger - Gintani Sport Valved Exhaust - Harrop BBK - Arykym Front lip and Diffuser - KW Sleeve over kit - Forgestar CF5V Wheels
2009 BMW 135i - Space Grey - 11.841 @ 117.81mph - SOLD |