I know when my duster did this, I tried different gas and it started doing the same thing yours does. I replaced everything and got nowhere. I drained the fuel and replaced with THE GOOD STUFF, and changed the plugs and she was back to normal. Oh and I drive my 9sec car on the street and it will not hook anywhere, let alone the fact you got no idea where a car may be pulling out of. Being a cop I have seen my share of crashes and I hate having to go tell wife, mom , dad and or kids that their loved one is dead cause they didn't want to spend $100 bucks on fuel, entry and food. Just not worth it IMO...