[notnow]

Talking about this one:
http://www.ebay.com/itm/BMW-E92-2d-3...f06cca&vxp=mtr

I already had a diffuser but wanted to try out a new look for cheap. I've had DD quad performance diffuser which looks ALMOST the same as this one, as well as the quad FINNED diffuser and a Cyba quad diffuser.

All of these diffusers fit perfectly and aligned properly with my quad tips performance exhaust.

However, the quad diffuser that I linked off ebay has the exhaust cut outs at the wrong spot. You will NOT be able to even fit it on without rewelding your tips. The measurement is off by almost 2 inches, you will need your exhaust tips (driver/passenger) to be very spread apart from eachother to have this fit.

That being said, you can probably install the ebay diffuser first and THEN install your exhaust and tips. But if you are going to re-weld your exhaust tips, you might as well spend the extra $100-$200 and buy the real DD diffuser.

Because I could never even put this on, I had to get it refunded. They misrepresented the item by posting a DD quad performance diffuser in the installed picture. You can also see the exhaust cutouts on the "installed" pic (DD diffuser) are squared off and more aggressive than the "uninstalled" pic that are more circular/round.


Just a heads up, don't get fooled like me and wait an entire month for it to arrive.

[Island Road]

Great info, I know a lot of people were curious about this. I was planning on buying one myself but went with DD simply on the uncertainty of the ebay one.