Run E85 without limits no switching maps, no guessing ethanol content, just pure performance. The AMS Performance CAN Bus Flex Fuel Kit for the Nissan Z (RZ34) is your one-and-done solution for safely running ethanol blends from 0 to 100%. Whether you’re filling up with pump gas, E50, or full E85, the system auto-adjusts timing, boost, and fueling in real-time giving you maximum power and reliability without lifting a finger.

This kit features true CAN bus integration and works seamlessly with EcuTek tuning software, making calibration simple and powerful. It even includes three additional 0-5v analog inputs so you can add fail-safes and monitor vital pressures like fuel, coolant, or crankcase giving tuners the tools they need to protect your engine at any power level.

The plug-and-play wiring harness, braided -6AN fuel lines, and race-grade fittings make installation clean and easy. Built with CNC-machined anodized brackets, the entire setup bolts directly to OEM mounting points for a rock-solid fit and OEM-level finish. No zip ties, no loose sensors, no shortcuts.

AMS Performance took the guesswork out of ethanol tuning this kit is the ultimate set it and forget it upgrade for any boosted Nissan Z.