Exhaust particles?

An idea I had is to put particle emitters in kart exhaust pipes and when you used/got a zipper, nitro, skidding or drafting boost, particles (flames) would come out of the pipes. This would only be on certain karts, those with exhaust pipes (Tux, Beagle, Mr Iceblock, Mozilla, etc) but it would add some more visual excitement. I don't know if you could just put a point on the end of the pipe where the particles should come out.