Low idle

[95tsiAWD]

my 2G idles really fricken low. Like around 400rpm, it does it randomly and also wont boost above 7 psi. I haven't put any "mods" on it for over 1 year and it has new plugs, wires, MAP sensor....... any thoughts

[clean2g]

This is a guess but, boost/vacuum leak maybe?

[Jakey]

How about a modification list?

[Bode]

Welcome to the wonderful world of DSMs. My guess is a vacuum leak as well. Do you have a boost controller that could of broke, letting un restricted vacuum to the waste gate causing it to open around 8psi? Also, what kind of spark plugs and wires do you use?