Top Speed Bypass pipes initial impression

[F1GP]

Finally got my pipes installed yesterday. Initial impression is the car sounds raspier and there's a slight increase in volume especially around 4000rpms and up.

It took 3.5hrs for my shop to do the install. It was longer than expected because they initially ran into some issues last week with rusted/fused bolts and then the discovery that I was shipped two left pipes. Yesterday they completed the installation but had some minor issues with the pipes lining up perfectly. They ended up trimming the pipes to fit properly.

Despite these issues, I'm pretty happy and the price can't be beat.

Two questions though...is it normal to have a burnt smell after the cat-bypass pipe install? Does this eventually go away?