back fire

I wanted to wire an MSD ignition box or a Bee*R to set a rev limiter as well as 2Step to get my protg to back fire. would it work? It already has a few pops here and there when you down shift

I recently have been getting a back fire either while shifting from 2 to 3 or, also from 3 to 4 but its just one small pop nothing like a gun shot. And also if im going down hill to where i can take my foot of the gas and still maintain a speed of 35 while in 5th is has a deep gurgle. I have...