I don't understand. I test drove a Mango on Saturday, pulled out of the dealer lot, and went for a cruise. I stopped on a back road, turned esp off floored it, and it left black marks through 3rd gear. Now that I bought it, I cant get it to spin hardly at all, maybe a 2 second screech, but thats all. Why was it good to me then and not now? I have tried on several types of road, and nothing. What's going on here???