I have almost fully installed the zex kit on my 91 Ls, but i ran into a few problems…Which TPS wire do i tap into? How do i run the intake vacuum line from the zex management unit into my AEM intake? there is only one spot for a vacuum line, and its taken. Also, The other vacuum going to the FPR from the zex, does this one stay on all the time? or only when i spray. Thanks a lot for the help
Red wire.You take the vacuum off the intake manifold that connects to the FPR completly off, and then plug in the vacuum to FPR that comes out of the zex box and the other one to the intake manifold.
clarification
You say red, the last guy to ask said Green/white, Do you have a '91 and know for sure? also, the one vacuum line on the aem cold air goes to the back of the valve cover, not the FPR…you are saying I should disconnect this entirely and use it for the ZEX intake vacuum hose?
Also, whats the easiest way to run the line from the bottle to the engine?
thanks again
It’s the red wire trust me.You don’t run your vacuum of the AEM intake you run it out of your intake manifold.That’s why I told You to take the vacuum that comes out of the intake manifold to the FPR and disconnected completly and run your vacuum from there.More simple run the vacuum that goes in the box out of the intake manifold and the one coming out connect it to the FPR done.
OK, now i understand, thanks…How about running the line? any quick tips before i make the attempt?