well. when im driving hard and shift a gear there is like a pop sound in my exhuast it almost sounds like my catayltic..and it leaves a puff of black smoke to when it does it..mind u it is when i have it revving like 5500.
and it also works really well in the cold and [censored] but durign the day it runs liek [censored]..would this be my iat?? anyways hope u guys can help me
