1) You know those soft and pleasant 3 note chimes on the 2015? The ones that go off when you get in the car? Is there any way I can change out the ones on my '14 for those on the '15?

2) Rear diffusers: Do they do anything aerodynamic or do they just look really cool? I have a black car so looks-wise there wouldn't be much of a difference.

Happy New Year everyone!

 

I don't believe you can change the chimes in the car as I think that is something built into the car.

As for rear diffusers there really isn't much if any help in terms of aerodynamics in creating more downforce on the cars. They are just there for looks so whatever looks best to you go for it.

 

Most of the rear diffusers on the market for these cars are strictly appearance mods. A properly engineered diffuser on a race car will increase downforce but at the cost of making the car less aerodynamic.

 

the chime is a module, so you would need to wiring diagram to see if the 2 modules are interchangeable.

 

I put the Boss "diffuser" on mine. I think it looks great on black, mostly because there's just so much shiny black paint back there. Other cars have the black decklid panel that breaks it up. As for functionality, I doubt it.