Quote:
Originally Posted by jagman
Great documentation! I recently got an 08 E92 M3 that came with the Akra slip-on. I've contemplated the Akra midpipe but the Akrapovic midpipe would have smog implications in CA. The Challenge Street X-Pipe was recommended since the primary cat stays in place. I see from you that requires welding. I was hoping to do the install myself... that might not be possible. How is the drone now that you have had it a while? Also, have you considered the ESS tune with the cold start mod for that drone?
Thoughts from anybody for that matter?
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It is not required to be welded at all actually even though some may choose to do so. Stainless clamps are provided with the street x pipe so that it can be installed by anyone and also removed later on if going back to stock.