# \#euro-6

**URL:** https://community.tunersguild.com/tag/euro-6/109.md

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## [How much should I adjust AirDesire on EDC17C74 for Stage 1?](https://community.tunersguild.com/t/how-much-should-i-adjust-airdesire-on-edc17c74-for-stage-1/95)

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**Author:** [@ThomasPirowski](https://community.tunersguild.com/u/ThomasPirowski)\
**Replies:** 0\
**Last updated:** [April 26, 2026, 6:01am UTC](https://community.tunersguild.com/t/how-much-should-i-adjust-airdesire-on-edc17c74-for-stage-1/95 "2026-04-26T06:01:13Z")

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On an EDC17C74 (Euro 6), push AirDesire no more than 2-3% for Stage 1 — or even just 1% as a symbolic map edit. The ECU is already running 19:1 AFR at critical load, so adding 21% fuel leaves mixture at 16.5:1, still com…