sooooo i got a 93 fd TT....and everytime i go to change my air filters only one of them is dirty....i also have a sebion CB hood where the dirty intake is close to a scoop in the hood....but i dont live in a very dirty place.....i took the filters off and tried to just feel the suction on both intakes.....the dirty one seems to have a little more suction than the other....why is this????.....turbo is not spooloing?????????

 

Primary turbo vs. secondary turbo. The primary turbo is used most of the time at low RPM. As long as the car makes it's 10-8-10 boost pattern, everything is fine.