Exhaust Drilling

[f2fitty]

Hey, i just bought a pocket bike. Waiting for it to get here. It already comes with a performance pipe. The one that kinda looks like an upside down triangle on the end. I was wondering if i drilled out the cylinder part of the tip, if it would make the bike go any faster, or have a different sound to the engine. One of my friends said it would lose back pressure and be slower. But hes a retard and is putting mothballs in his gas to make the octane higher:S hes stupid but yea, thanks hope someone can answer my Q.

[RD RACING]

no, by the time you drill / machine the triangle to form a circle the diameter will be to large for both the stinger and muffler to work. if you want a good rear perfomance muffler which also sounds tops i suggest try and find a used ktm 50 or 65cc moto x muffler, the new ones are expensive.

[f2fitty]

oh alrighty thanks for your input