Shoot particles like motorcycle roost...

So I have been playing with particles lately, and I'm mostly happy with what I got so far. But, I'm having a hard time tweaking my "roost" particles so that they look like a real motorcycle dirt roost.

I want the particles to first go up, and then start going back down towards the ground, like an arc. The problem is when I start moving the motorcycle, the particles have a hard time keeping up at speed, and they don't really go up anymore. If I raise the Y force too much, then they look okay at speed but they shoot way too high when going slow.

If anyone as any suggestion on how to make dirt roost particle that go up then fall down, in an arc shape, then please do say...

Thanks for your time, as always :) Stephane