They added to n63tu and it did bump the HP up about ten percent. Totally not worth it.

The n52 very similar to my M54 but with Valvetronic and that is like 16% HP boost no turbo. The difference is quite noticable.

The n63tu3 I forgive it for having Valvetronic; that thing is a BEAST

I didn't know no Valvetronic until we bought '12 50i X5.

I figured we just had to bite the bullet and deal with it. Imagine my happy surprise! (Tempered by the fact they used matched $300 Dirk injectors)! If you can't find a matched series you have to replace all 8 if one goes bad; literally more than changing out a turbo!

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)