Nexus ECU V1.34.3 Release

Nexus Information › Firmware ReleasesUpdated Apr 2026

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Upgrade Notes Requires NSP Version 1.46.3 or newer. Requires Haltech Connect Version 1.6.6 or newer. V1.34.3 Release Fixes Fixes Ti6L not connecting reliably with dual bank O2 control enabled with long term trims. V1.34.2 Release Fixes Nexus S2 Only ...

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