Best performance pipe for SR Street (Piaggio engine)

Hi guys, the thing is that i need more power, so i decided to add a sport's pipe. My scooter is completly stock. So, which pipe is best for a stock scooter ? I heard that leovince zx is one of the best for stock's. Thanks in advance for your answers. Ofc my goal from pipe is best power i can achieve. Btw what you guys think about leovince tt ?

 

I put a pm tuning 360 exhaust with 5g rollers on my zip. I gave it a couple of extra mph

 

A PM Tuning exhaust is a real screamer and may be a bit much.

I'd recommend a Yasuni R or Z or even a Technigas Next R as possible alternatives. I have a Yasuni exhaust on my bike and it makes quite a crackle, it makes dogs bark and babies cry .

 

The TT is quite reasonable for the money.I had one and liked it, it wont give the top speeds of some of the other pipes but will match them on acceleration. Goes well with a basic sport 70 kit