# External AFR Gauge with EMU Classic and 4.2 lsu

**URL:** <https://community.ecumaster.com/t/external-afr-gauge-with-emu-classic-and-4-2-lsu/6619>\
**Category:** EMU BLACK / CLASSIC\
**Tags:** request\
**Created:** [October 4, 2026, 6:46pm UTC](https://community.ecumaster.com/t/external-afr-gauge-with-emu-classic-and-4-2-lsu/6619 "2026-10-04T18:46:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![MostlySilver7mSupra](https://avatars.discourse-cdn.com/v4/letter/m/f08c70/32.png) [@MostlySilver7mSupra](https://community.ecumaster.com/u/MostlySilver7mSupra)\
**Post date:** [October 4, 2026, 6:46pm UTC](https://community.ecumaster.com/t/external-afr-gauge-with-emu-classic-and-4-2-lsu/6619/1 "2026-10-04T18:46:06Z")

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I was wondering I could use an AEM AFR gauge with my EMU classic and bosch 4.2 lsu WB. I have the wideband sensor connected to the EMU using the internal controller. Is there a way I can connect the AEM AFR gauge to the EMU and have it output the AFR to the gauge?

TIA