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Quad exhaust.
Thank you for liking my exhaust. I used an M3 replica bumper, which has the factory locations for the 335 tailpipes. Then I cut out larger holes to accommodate the quad pipes.
My car has a factory exhaust. So I simply cut off the tailpipes and added the quad pipes over those. Therefore, "pipes are in the same location.
Cutting the bumper was simple. I used a cordless jigsaw to make the openings. Then I filed and sanded the edge to finish it. Then some factory spray paint, a little sanding and polishing, and voilą. It it looks factory!
And believe it or not, the sound really changed from the addition of the quad pipes. Because it is after the muffler stage, I didn't expect it to change it all. But it got much more aggressive. I am very happy with it.
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