The Sprint booster would not have caused Nerf's problem.

As for the SB, our cars should have come with the device. I will likely buy more Crossies as time goes by. Everyone of them will get an SB.

Install is easy. Simplist performance mod one can do. It makes the Crossie go faster faster.

Get one from TVT or SRT six. And if you don't like it, PM me, I'll take it off your hands.

roadster with a stick