Take a look at the BMW E89 Z4 28i running at full load on on the Maha Dyno, with the Supersprint turbo downpipe and complete exhaust in place.
https://bit.ly/3xXfM3B
As always, we guarantee huge gains in performance, and a beautiful, deep sound.
This Supersprint full exhaust is a must-have for every 2011-2016 BMW Z4 28i proud owner.
Don't settle with lame exhaust modifications or other useless bolt-ons, for cosmetics only.
Get the real thing instead; go big with Supersprint.
The Z4 28i N20 4 cyl. Turbo engine has a potential of 300+ Hp.
All it needs is the proper engine tune to match the Supersprint oversize diameter, free-flowing exhaust system.