Quote:
Originally Posted by dsc888
Thank you, roundel335! That was very helpful. It's interesting that BMW created both a MSPPK and a MPE upgrade for us B58 owners. I can't justify spending >$3,000 with installing and tax for the MSPPK myself. But I can swing the $900 for the MPE. It looks easy enough to install myself based a few YT videos I saw for the 335i.
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Don't forget that the MPE for the LCI 340i requires that you purchase exhaust tips along with the muffler, unless you want to use the ones from your stock system. Not sure whether the stock muffler has to be cut off or if it's clamped on like the MPE (mine was port-installed, so I have no reference to go by). Either way, it won't be much effort. The valve actuator connection is the same as for the stock system so it just plugs right in.