Hopefully it is the catalytic converter that causes the smell hmm.every time i chase a car with this smell.. i knew they are still using the catalytic converter.. most of them with stock exhaust.. the smell only comes when u revved the car hard.. that is normal for nowadays car bro.. the catalytic converter burned excessive build up that goes through them..
But my engine is too weak to engage wheelspin lol!tyre burnt la hard rev=spinn tyre sure got burnt rubber smell