MOPED ARMY

Been there, done that! Oh ya I'm running a 62 main jet and my gears are 17/45. Seems like at 27 mph is'nt up to par!!!(32 w/stock pipe)

i went 37 with no air box. does it sound like it has alot of power still when your at top speed?

Re-install. I put on the Boss and gained 3 to 5 mph running ~33 now with just the pipe. Stock jet on bing.

No pipe sounds better either.

Check your exhaust gasket.

You want to ditch the stock airbox and rejet. REJET.

Also, your gearing might be a tad high for a stock cylinder.

I don't know if there was one there originally or not, but you can make one. You can try this, or you can do what I did: Buy a flat rubber washer that fits in the hole in your carb where it attaches to the intake. Use an exacto knife and cut the middle out of your washer so that the inner diameter on it is about the same size (maybe a little wider) than the hole the air/fuel flows through -- you want it big enough that it's not blocking air flow. Then put that washer into the carb and put the carb back on the intake. It's worked for me on two separate carbs and two separate intakes, although you should experiment with other methods and find out what works for you.