Im new to the cobras, Ive had a couple other fast cars(a GT and a z-28) but my cobra feels very week below 4k RPM. It pulls hard above 4k, but my old GT feels faster than this thing below 4k RPM. it feels like it almost bogs untill you reach 4k and then it takes off. I dont understand. Is this normal. Ive heard a few people talking about putting gears in it would help. I drive my car alot on the interstate and I dont want to kill my gas milage with gears, so what do you guys recommend. Thanks, Holly