Is fuel injected.
Dont recall what it has for an intake/plenum but it wouldnt suprise me if its leaking.
Also egr could be an issue.
Woukd need a better description of the trouble,rich/lean/hot/cold,you know give me something to think about.
that is the whole problem it's intermittent, I can get on the highway and punch it RAAAAAA!!!! it runs like a beast and then the next time I step on the gas it will make a huge hisssssssssing sound and bog out. I drove it for two days with no leak and then it suddenly came back back today while on the highway
after it cools and is started again, its a 50/50 chance it will leak again
the other day it started leaking on start up and then a mile into the trip the leak stopped and all the power returned