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Hey y'all I am about to have this done to my 07 e90. I need good advice here because I have been sitting on it for days... Stage 1 or stage 2? I have the money for stage 2 but my brother (audi enthusiast) says he wouldn't bother with the extra $600 because my 335 already has a cooler in it, and the gains wont cause that much stress on my engine. Do y'all think the extra $600 is worth it for the fan and aux water cooler? I need honesty here!
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