when i start the car ... i can hear a ticking sound....when i go on the floor and i put my head under the car i can hear it louder...i pop the hood there is a little tick but that is normal.... when i rev the car the tick continues but faster..??? when i first got the x pipe installed like 4 weeks ago everything was fine....like 2 weeks after the light came on ....i got the chip a week after and i told him to erase the cats so i dont have to see it... so im guessing its either an exhaust leak or my bad cat...?????? Anyone know what i can do that might fix this problem?