What made you choose this particular product?
Good reviews, strong design, huge performance gains.
Is this your first time buying from this brand? Did you consider other brands?
Yes. I did consider a Wavetrac diff, but the MFactory was more future-proof for my needs.
Was it easy to install? Any installation tips that will help others?
I rebuilt the diff myself with a donor 3.73 ratio pumpkin.
Once you've had a chance to use the product, did it meet your expectations?
Lost refinement, but I don't care, it handles amazingly and it's super predictable.
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Popular mods for 2009 BMW 1 Series