You said u had a leovince sp3 exhaust on your scooter is this the best performing exhaust for the like 50 and how much more speed did u get by upgrading the exhaust?
No, it's probably NOT the "best-performing" exhaust, but I wanted something way less restrictive, more lightweight and more cosmetically appealing than the stock pipe, so I went with the LeoVince SP3. I'm sure an expansion chamber-type exhaust would perform better, but I didn't like the looks of one of those on a retro-styled scooter, or at least not the KYMCO Like. That's a matter of opinion though. I don't know how much speed I picked-up just by installing the SP3 pipe, as I did other performance upgrades at the same time. When you purchase the SP3 pipe, it comes with lighter roller weights and stiffer clutch springs to complement the pipe, so you're likely not just going to be bolting-on a pipe without doing some other "common sense" upgrades while you've got the CVT cover and the carburetor off the scoot. I put some Dr. Pulley sliding variator weights (7 gr.) in instead of the conventional roller weights that came with the pipe. Personally, I'm a firm believer in the Dr. Pulley's, but that's just me. They seem more quiet during operation and the performance design of them just makes sense to me. To each their own, right? Best of luck!