Setup: Borla Catback exhaust + Nuespeed carb legal intake. Still have my cats. No drone at all with this exhaust. Really digging the sound. Audio recorded with a microphone on the trunk and one in the ...
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Essentials Upgrades for the E9x M3
Two E9x M3s joined the Evolve and Eventuri team at the same time, and there was no chance either of them was staying stock.
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