Thanks in advance to those who post.

To those that post please show some form of proof of the numbers as I like to really do my homework before purchasing.

Much appreciated gents!

My 2012 E63 BiTurbo just hit 1500 miles so I'm ready to break into the piggy bank, the one the wifey doesn't know about

Here's a link to Weistec's website
http://www.weistec.com/m157.html

Look at the ECU tune and the Sport Air Filters.

Here's also a good air filter from renntech's website (note that you will need two)
http://www.renntechmercedes.com/www/node/1033





Here's a dyno sheet from Weistec




SuperSprint are developing an exhaust system for the E63 Biturbo which maybe out soon.
http://www.supersprint.com/en/prod-7...093E280BA.aspx