Holy shit! Just heard the Tecnocraft Envy manifold yesterday, in fact drove around the block in it on another guys car. Sounds AMAZING!
When we started the car and pulled off I seriously thought he had exhaust or something, but it was just the manifold, charge pipe, and scoops.
No sure on the power gains, but I can tell you first hand that the sound is amazing, very aggressive, but not obnoxious what so ever. kind of sound that really bites when you want it to, but if you;re ejust cruising it's really not too obtrusive at all.
This is a mod I plan on doing for sure.
2009 E90 M3 | Silverstone II | Black Novillo | HRE P40's | Akrapovic Exhaust | Eibach Pro Kit | Jet Black Kidney Grilles | SSII Side Reflectors | SSII Side Gills | LUX H8 Angel Eyes | Macht Schnell Filter | Tecnocraft Envy Charge Pipe
"M3 drivers have no friends." - Jeremy Clarkson