How about up to 60hp to the wheels (80hp crank) on a completely stock car or up to 100hp to the wheels (120hp crank) on a fully modified car? The JB4 features a simple plug...
BMW N54 SINGLE TURBO KIT RELEASE After much success with our N55 Turbo Kits, the Speedtech N54 Turbo Kit is finally here! CAST MANIFOLD Similar to our N55 manifold, we designed the N54 manifold to...