My car has absolutely no low end power, i mean to the point where i cant spin the tires in the rain on a painted line. My car also sounds like its from the jetsons, it sounds like the cars(or ufo's or w/e they are!) every once in a while when its accelerating hard, or really anything over 3000rpm if being driven hard. When i was sea foaming my car the engine may immediately filled with smoke, but i couldnt find where it was coming from(stupid broken struts). Does anyone know what could be cuasing this? If its the y-pipe where do i need to look to see if its busted?

 

under the car.

How is your idle?