Boost/vacuum leak test

[keada714]

So my idle has a bounce to it when coming to a stop. Going to do a leak test but I'm a bit confused on two parts. Hoping someone could straighten this out for me.

1. Do I connect me device after the maf, before the turbo?

2. Do I plug up the cold side right before it goes into the intake manifold?

Thanks. I'm advance.

[derass]

You can do it after the MAF, but if you have the rubber intake pipe it will swell up as you pressurized the system. I noticed this as I did the test and was worried of it bursting. There isn't much to leak between the MAF and turbo anyways, you should be checking the couplers, so you can do the test at the hotipipe. Also the cold pipe does not need to be blocked, somehow the engine holds the pressure in the system (closed valves I assume) I found a leak at the hose that connects the IACV to the cold pipe.

[KoukiMonsta]

Connect after maf, before turbo

Leave everything else alone, listen for IM gasket leaks etc

[keada714]

I have all stock piping as well as the rubber intake. Should I still do it before turbo after the MAF.