I just discovered my S3 with air pump delete has had some "creative" vacuum line routing that may not be correct. Which vacuum port should the EZF get a signal from? Is it the one at the front of the throttle body without the red cap? The thermo valve has nothing connected to it. Is that not needed with the air pump delete? Thanks.

 

EZF gets vacuum from the six way splitter connected to the rear port of the TB on my car. You should be ok without vacuum to the thermo valve as long as there are no uncapped vacuum lines.

 

Ah, OK. Maybe it was done correctly. The fitting at the front of the TB is capped off. Was that for the thermo valve?

 

That port is routed to the charcoal cannister valve on my engine.