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      03-09-2012, 10:05 AM   #10
Maxx2
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Quote:
It's also interesting that the peak HP is around 5300 rpm on that dyno and then it drops off. That suggests to me that it's running out of air up top. I bet a less restrictive intake would make a lot of difference.
Does anyone offer an intake upgrade for the X5 50i? I did a quick search but haven't found anything...