Just the other day, me and my dad pulled up onto the boulevard, and as we do a white car comes flying up right behind us, so to avoid problems my dad puts a little power to the peddle. As we begin to speed off the engine back fires. So we figure the engine was just clearing out some bad stuff. So we get onto the highway, and then we notice we have no turbo boost. Driving down the highway my dad put the peddle to the metal a couple of times, but no boost at all. The needle on the boost gauge when right up to the middle. So as we exit the highway to stop somewhere, I still notice the whinding sound of the turbo at low RPM's. When we stop in a parking lot my dad revs the engine a couple of times, and as he lets of the gas the RPM's fall below 1,000, and as it rises back up to a little above 1,000 to get back to neutral, smoke blows out of the exaust as the car stutters a little bit. Is the turbo gone for good? When the turbo gauge on the car moves does that still signify life of the turbo? Are some of these symptoms similar to Prospero's problem? Is the fuel injector too dirty? Help would be greatly appreciated, thanks.<P> Noah K.