Has anyone purchased the GruppeM Carbon Fibre airbox for a Z4 e89 35i??? Am interested in the sound ? Does it give the 35i a CSL fibre carbon type induction noise?
See link of the kit:
http://www.xposed.com.au/bmw-z4-e89.html
Having already got the GruppeM airbox on my M3 e92 I know the quality is 200% and the sound is something else, LOL.
See link of the kit:
http://www.xposed.com.au/bmw-z4-e89.html
Having already got the GruppeM airbox on my M3 e92 I know the quality is 200% and the sound is something else, LOL.