Hey guys! I have a Custom tune & vcm otr with the sound enhancer retrofitted on my vf ssv ls3. In the first week of December will be upgrading to a full harrop exhaust such as 200 cell high flow cats, 1 7/8 4-1 long tube headers and 2.5 inch cat back with bimodals. Im after more responsiveness and more torque all the way through the rev range inc bottom end. What concerns me is will there be too much noise coming into the cabin due to the sound enhancer still fitted? & will there be a fume smell too? Due to the upgrades cats and headers i have the concerns about increased cabin noise and fume smell.