gotchya, i've seen some people run them without the box on top, i've always wondered this however, since there is no intake to properly distribute air evenly to each chamber, couldnt one be working more than the other??? also, how much more performance can you gain since your only sucking air from the engine when you'd want cooler air for better performance.
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2004 RX-8. I would love to tune it but can't find the right parts for Microtech
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