ANSWERED: G3X Touch EIS Lean Assist with TIT AND EGT possible? - NO

[Rick Junkin]

Has anyone figured out how to get the G3X EIS Lean Assist mode to display peaks on both EGT and TIT at the same time?

The Garmin manuals are a bit vague on how the Lean Assist function can be configured. My interpretation is that if I have EGT probes it will use EGT, and it will only use TIT if TIT is the only thing configured, meaning no individual cylinder EGT inputs to the EIS. Is my interpretation correct? @TrekLawler? On my airplane the Lean Assist enable/disable configuration option is only available on the EGT page, with no option for Lean Assist enable on the TIT page. I tried disabling LA on the EGT page thinking that might make it available on the TIT configuration page, but no joy.

My G3X Touch EIS is configured with 6 x CHT, 6 x EGT, and 1 x TIT from the TIO-540-AF1B. Lean Assist mode operates and displays peaks per the manual for EGT and marks the fuel flow for the first EGT peak. TIT has no Lean Assist indications. I'd like to get the TIT LA indications but I don't want to lose the EGT indications.

Full disclosure, I don't normally use the LA mode but I'd like it to work the way I want it to .  I do the Big Mixture Pull and then adjust to my target LOP fuel flow and TIT, and occasionally enrich back to find peak TIT to check how far LOP I'm operating. I'd like to have the cyan LA marker as a TIT peak reference on those occasions.

Cheers,
Rick

[Rick Junkin]

Bumping this. 

Is anyone operating a turbo with a G3X EIS and have the Lean Assist function set up for your TIT?

Cheers,
Rick

[Rick Junkin]

I found the answer.

EGT sensors must be turned off in order to get the G3X Touch EIS TIT lean assist function to work. We cannot enable both EGT and TIT and get the lean assist function available for TIT. With both EGT and TIT sensors enabled the lean assist function is only available for EGT.

I got this information indirectly from Garmin through Adam at Mid West Panel Builders. Adam has done some very informative Youtube videos on the experimental G3X Touch configuration, operation and integration with other Garmin avionics and was kind enough to reach out to his contacts at Garmin to answer my question about TIT lean assist. Here's a sample video if you're interested in checking out the MWPB channel and the info they provide for the experimental community. 

 

 

I will be watching for any updates on when/if any changes are planned for the EIS to expand the lean assist capability.

Cheers,
Rick