and just so you know, nearly all RTR gassers say they have a tuned pipe. But a aftermarket tuned pipe will nearly always increase power (either at the bottom, mid or top end, depending on design)
The MT pro is a heavy beast. I thought my KM Baja was awesome, until I drove it along side (or rather, far behind) a MT pro. when it comes to 1/5 scale, having 4wd and 4 wheel braking is a HUGE advantage. My KM might have had more top end, but the MT pro was better in every other respect.