I've searched and can't find either a picture or definate place to put a vacuum line for the boost gauge, other than T into the pressure sensor. I have no emissions and jdm manifolds. I would like to dedicate a spot on the UIM for the boost and possibly BOV? Thanks

 

In the first pic is my first choice, second and third if someone can point out a place? This is a conversion and need to make sure I'm reading boost. Anyone?

 

Just T off the pressure sensor vac line, or the BOV vac line. Your making it much more complicated than it really is. You could use your first picture (that is the fuel pressure regulator), but it would be REALLY annoying to get at if you really had to. Same with the blue hose below that one. Just make it easy and T off the easy to access vac line running to the BOV and pressure sensor.

 

The Bov is T'd with the pressure sensor to the back of the manifold, the first pic shows a nipple in the middle thats not the fpr whats this? If I wanted to be different and not use the PS what other nipple sees vacuum? This is a s4 with s5 turbo on it can I use the nipple coming off the turbo which has its own T?


my mods are

rb 3'' dp/ exhaust
izuzu fmic 2.5 and 3'' tid
fd fuel pump
ported wastgate s5
tial bov
rtek 1.5

 

do u not have the nipple coming off the UIM below the bac?

 

yes I was t'ing the bov and pressure sensor there. Also there is no bac I blocked off.

 

well T it again and be done with it. Or be stubborn and put it somewhere else. I don't care.

/done

 

above the turbo there is a air control valve that most people remove it is located on the lower intake manifold. There is a nipple line on air control valve that the boost sensor reads off of i would use this line and tee from it it is what your computer is using as an input. The first picture that line going to the fuel pressure regualtor you want to leave you could t in there but theres better places. As for the nipple behind it to the left im not sure what thats for i dont think my s4 has it. ill have to check. on the second one i think i remember the top vacuum line not being vacuum? not sure there was something strange about those vacuum nipple my manifold also has 4 of them. and for those in the last picture those will probably do they pull vacuum when i have my vacuum gauge up for some reason my car pulls more vacuum there then by the map sensor nipple. my car also doesnt run right so i have to look more into it. If your not sure hook a vacuum gauge up to the nipple you want to run from it should pull about 16in at idle 0 at WOT and then once you lay off WOT it should spike up.

 

Any nipple after the throttle body will work.

But really, fix those injector connectors while you are there!

 

Thanks alot will do