If i use a sunpro acp7978, analog retro line vac gauge with the sunpro acp 7575 vac gauge line kit what will be the best line to tap off of? I looked briefly today but it was too cold out for me to really get in there and look around. I didn't really see a line that was small enough to use with this setup. I tried looking on past thread and didn't find much. which line has anyone else tap off of?

 

im also looking for the most accurate point to measure from

 

tap in here on the side of the throttle body elbow






or near the battery box area on the passenger side firewall











DO NOT tap in here by the EGR








this is what my guage used to look like

 

The largest central port on the intake manifold is the best. Always adapt lines UP - not down - in size.

 

Thank you alot. I was just really confused because theres rubber lines everywhere and they all looked the same.