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Originally Posted by 818Guy
Holy sheet. That would be hella loud. And what's the cost? $2k?
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Whole SS setup has got to be an easy 3.5-4K. Headers alone are worth $1500, race cats $1700, midpipe and muffler an easy $1200...what is that $4.4K. I have this setup on my M3 and it was worth 24rwhp..doubt it would be worth so much on the X3 though..
My M3 is very loud..imagine the X3 would be as well.
Talked to Eisenhaus regarding the quad setup for the X3..no performance improvement over the standard setup, but you do have cut the other side of the rear valance.
Dave