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Alternative to 988503
A standard car will accelerate well up to 5500rpm but beyond that the power begins to fall
all designed for maximum everyday comfort
We do this by giving an increase in power and torque for the whole rev range
Evolve Supercharger Uprated Billet Plenum - BMW 5 Series E39 M5 Mini F54 Alternative to 988503NO LONGER AVAILABLE The reason we have made the plenum is not just for improved efficiency, but to facilitate not blowing plenums up or seeing even the strongest ones expanding and contracting so much (they eventually blow too). The plenum has been designed on purpose with the location of the the two entry feeds to be in the stock position meaning that it can be installed on any supercharger kit that uses the OEM plenum, such as RK and ESS The