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Secondary intake runner control
Popular for historic and vintage transmissions
You will need to purchase the optional 30-0306-ACC accessory kit to get the silver bezel and reversible white standard/metric boost pressure faceplate
JB4 E Chassis N55 BMW JB4 Tuner (A-Harness) civic si and experience the quality andJB4 Tuner for N55 E Chassis BMW 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 & play installation harness for easy installation and includes many features not found on any other tune. Including on the fly in dash map switching between factory and various performance maps, optional in dash gauge displays for boost and other
US$ 1250.00
US$ 249.50
US$ 2140.00
US$ 71.91
