Description

Introducing Rocky Mountain British’s 14CUX EEPROM. Replace that outdated EEPROM with the most current version for your size of engine. This EEPROM is for 4.2l NAS Vehicles. 4.2L engines were known for Hot Restart Issues. This EEPROM is the most updated version available that Land Rover Produced. The fuel map on this chip has been increased by 5% and idle has been raised to 700rpm

Please Note that we can not guarantee this will fix a running issue with your particular vehicle. Ensure chip is installed the correct direction. We recommend that after chip is installed that timing and base idle is set. Also it is recommended that you verify your ecu is capable of chip replacement, in early ecu’s the chip is soldered directly to the board and cannot be replaced. Feel free to email us with any question at RMRPrintedParts@gmail.com