Where is the power loss?

[bob123131]

Ok so i was driving and my car just started kinda sputtering and i couldnt rev past 2500 rpms. After i got home and had to drive 30 on freeway the hole way ifigured out my lower ic pipe and literally come loose from my ic no idea why. I fixed this and tightend it and yet i can stil lfeel a lack of power. I did a boost leak test but couldnt hear any other leaks. I had a friend drive it around block and as they pulled away i could hear a whooosh it sounded like engine was gasping for air or i had a huge leak. Is there anythign that this could be besides boost leak. My mpg went down alos so i replaced fuel filter no change. I cant here this noise when i rev it only when the car is moving and im out side of it. Any ideas what to try or maybe a problem i could have caused driving home with ic pipe disconnected. My spark plugs had alot of carbon build up also when ic pipe disconnected.

 

[turboinside]

The computer may be in "Safe Mode". Try to disconnect the battery for a few min.( abot 10). Reconect it then go hammer the shit out of your car. This is when the ECU goes thru a learning cycle. So if you hammer it, it will learn this setting and give you the optimum performance for this situation!