hi mates,

Week ago I installed Fast Intention Cat-back & HFC, I noticed my car response become slower & i feel its abit heavier then before.. I also have some bad fumes smell coming from the exhaust ...
Earlier I had Stillen intake installed and the car was perfect.

Will it go by time ? or the exhaust might not be installed perfectly maybe ?

Thanks G buddies.

 

It should be nothing. Break in the exhaust and it will go away

 

^ +1, the smell is normal for the first few hundred mile and the car will feel "lighter" as well, let the exhaust break-in and also suggest resetting your ECU by the pedal method or battery disconnect(if you dont mind losing your memory settings, presets ect)