Wind definately affects your mpg and top speed. With a headwind my top speed may only be 41mph, but with a slight tail wind it will be 48 mph. That's like a 17% increase in top speed when a headwind isn't an issue, so i would definately say yes aeromods will help. Also losing weight will help alot. My gf can get her 49cc honda to 42mph, i can't get over 38mph but i weigh about 60-70 pounds more than her.
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