BMW N54 Replacement Coil Power Harness - 135i, 1M, 335i, 535i, 740i, X6, Z4 s8 d4 Resulting in peak power gains

Resulting in peak power gains of 10whp+ and during longer pulls and back to back runs as much as 30whp+ over the heat soak prone factory intercooler

Resources: General user discussion forum with a detailed description of the JB4: Click Here

This complete plug-and-play solution replaces your stock LPFP assembly with a new

The meth/nitrous hookups are positioned to allow for running the supply lines discreetly

E90 / E91 / E92 / E93: 325i/xi

BMW N54 Replacement Coil Power Harness - 135i, 1M, 335i, 535i, 740i, X6, Z4 s8 d4 Resulting in peak power gainsThe Precision Raceworks BMW N54 REPLACEMENT COIL POWER WIRES are the same wires that come with our famous BMW N54 HIGH PERFORMANCE IGNITION KIT featuring low resistance oxygen free copper. These wires are 100% custom design from the ground up and Precision Raceworks is the only company in the world to produce injection molded coil connectors specific for harness use. Coil power wires are sold in packs of 6 so you get all new power wires for each