Most advanced Tuning for your M550i, we have tuned over 1000 N63 powered vehicles and have fastest N63 powered cars on the street.
This is the best looking intake for n63, the sound is amazing, you can feel Improved low end response from the car also.
Great power gain, car running 11.7 1/4 mile, my next step will be moving up to stage 3.
Best N63 tune out there, doing 8.1 60-130 with meth and Stage 3. Best of all is the customer service, Sergey always replies and helps with my car past the tune.
If you- want to have a very loud woooosh blow off sound dual port is the way to go, easiest and fastest way to install is by pulling off the turbos.
So besides the obvious, keeping my oil temps down around 5-10 degrees, the most noticeable thing after installing this oil cooler valve is not having to add a quart of oil to my engine every 2-3 weeks like I did before installing it ! Just in the extra quarts of oil that I don't have to buy anymore , it paid for itself in no time ...