Didn't think of this earlier but is there a chance that a critter got into your exhaust while you were gone? Not that likely but hey, strange things happen every day.

it could be anything..get it looked at

The dealer was not helpful, they told me that the tranny didnt register any codes, but then i took them for a ride and they said, something is wrong but they dont know what it is...

that happened to me when i put cheap gas in my car one time.. scared the hell out of me

I'm willing to take bets on it being the injectors.

Here is a hint: Did you leave the car garaged or on the street? Do you have enemies? - The first thing I can think of that may cause this kind of performance degradation is some foreign substance poured into the gas tank. Sugar or sand would most likely yield this result.

Don't drive the car. Call IRSA and have them flatbed the car to your dealer. Have the dealer inspect the content of the gas tank and the injectors.

Good luck.

^ the car was garaged

Well then... there goes my theory out the window...

Take it to the dealer. It definitely sounds like an injection problem. Also, how does the smoke coming out of the exhaust look like? - does it seem highly concentrated? Black? Bluish?

...so what happened?...

The dealership couldnt figure out what was wrong with it, but they currently have it...so hopefully they will know soon

good luck man.

i get panicky when my G acts funny (it went into granny mode after a 10k service and i had to reset the ecu).

Let us know what they say after you get your car back...curious to know...