Haimus Racing E90/E92 M3 S65 Carbon Plenum

Haimus Racing Carbon Fiber Plenum must-have item for any S65 N/A built where sound and power are required! Performance Gains:The following performance gains have been fully verified by the Hamius Racing team on the dyno with their S65 build. The results are ONLY concerning the INTAKE PLENUM, NOT the intake elbow. The elbow design was kept consistent during both runs.  Test conditions were kept constant for the OEM plenum and Haimus Racing carbon plenum, namely -8.03 degrees Celsius ambient temp, 53.4% humidity, 90 degrees Celsius water temp, and 93-95 degrees Celsius oil temp.Performance gains were measured without a remap, or any software change!The Haimus Racing plenum showed ~25nm gains at 3000 RPM and a 3.9whp advantage at 8300 RPM while showing a consistently smoother power curve and higher than stock power everywhere above 7200 RPM. From the results, we see the OEM plenum making its peak horsepower at 8.1k RPM and then dropping off power. The Hamius Racing carbon plenum was able