SLE BMW B58 / S58 Coolant Tank Extension Harness MHD Flasher F-Series N13 When ready

When ready

Pairing this TCU calibration with an iE Stage 1 or Stage 2 ECU tune will significantly transform every aspect of your S4

Additional supported features include burble adjustment

ON ANY TRANSMISSION

Enjoy reliable power gains

SLE BMW B58 / S58 Coolant Tank Extension Harness MHD Flasher F-Series N13 When readySLE BMW B58 S58 Coolant Tank Extension Harness The SLE Coolant Tank Extension Harness is designed for vehicles utilizing a top mount turbocharger setup that requires relocation of the factory coolant expansion tank. This plug and play harness connects directly to the factory coolant tank wiring harness and extends the connection by 60 inches, allowing the coolant tank to be relocated while retaining full factory sensor functionality. Constructed with