Hi guys,

Got a used modded(ported) toro nero(with pipe and manifold) from a friend, the engine still runs really well, and it's in my mbx7. However, the model nos. on the pipe and manifold seem faded, and it's a bit old and busted so i wanna get a new pipe combo for the toro, what's the best combo for the mugen x7? I've read a lot about the mugen buggy needs a narrower pipe, so wanna ask first before getting the wrong one.
Oh, btw, the engine's run time per tank is kinda low at a bit more than 7 minutes, is this normal? And i hope the pipe combo you guys will advice can give me more run time.

Thanks a lot for any help i can get.