| For what it's worth, I have never personally experienced white, sweet smelling smoke from a car that wasn't coolant. But we may have different ideas of what "white" and "sweet" are. As far as your injector replacement, I don't imagine the "white", "sweet" smoke from under your hood would have been fuel for a variety of reasons, not the least of which is that you'd definitely smell gasoline if it was leaking into your engine bay enough to cause visible smoke of any color. I don't believe that the car simply having sat for a while (were it in proper order when parked) should contribute to any consistent/excessive smoking from anywhere. But, I agree with the suggestion that you change your oil. Your post reads like the smoking started after the injector was replaced, but the history prior to that time isn't clear, both in terms of how the car was running and when the car became yours to pay attention to. Are you sure the car wasn't smoking before the injector was replaced? Who replaced the injector? You mentioned the AC system: I can't imagine what in the AC system would be generating smoke without being something being seriously broken. I wouldn't ignore any "smoke" of any kind coming from any part of your car, even if you think it's from a component you don't care about. You say the car is "chipped" for 14psi but you're only getting 7-8psi. Aside from safety boost, the ECU has no control over the boost the car makes. It's hard to continue troubleshooting the boost issue without knowing your car's modifications (your profile isn't complete), but in any event it would be smart to do a boost leak test. You might also want to do a compression test at some point just to get a better bead on the condition of the motor, if you're so inclined. You suggested that maybe your boost gauge was hooked up to "one turbo". The reading on your boost gauge should be the manifold pressure, and wouldn't only account for a reading off "one turbo". As far as your primary inquiry about oily smelling smoke from the exhaust, I agree with Stadsport (PHX) that burning oil from your exhaust could indicate leaking turbo seals. It could also indicate bigger issues in the motor but I can't imagine you'd have problems that serious and still consider the car to be "running fine". But, it sounds like you might have a few issues, so it's hard to say. Good luck.
Andy
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11:20:40 05/21/12
