hi all another stupid question from a novice rex owner i just changed the standard air intake with an inguard pod filter set up car goes well and when u accelerate you can hear it sucking air ,but when you change gears it sounds like it blowing air back out , like its making a sound as if you dose your car if thats a word or you have a ssq blow of valve sound if if that makes sence is this normal thanks

__________________
JESS 998