Here is the Supersprint recipe for a monster gain of 40+ Hp, and a major jolt in torque throughout the entire powerband, on the 1998-2004 BMW M5 E39.
https://bit.ly/3jQBRKD
Proprietary-design Tubular Headers, with larger diameter, long individual primaries, 4-1 race collectors, HJS Motorsport 100 cpsi catalytics.
Supersprint developed and built these headers in distinct versions, for the LHD and for the RHD cars.
By eliminating the restrictive, double-walled factory manifolds, our performance headers systems have helped the S62 V8 Motorsport engine reach its true performance potential.
What the BMW Motorsport engineers could not do (blame it on the limitations of the Euro emission standards of the era), Supersprint did, with an enormous success in popularity among the M5 enthusiasts.
Up to date, we still handcraft these fine E39 M5 stainless headers on demand, for all of their performance-conscious owners, shipping them worldwide.