Is it normal for my Katana Elise to run really rough until it is warmed up to ~160 degrees? When I first start the car, it will start right up, but when I touch the gas it wants to bog down. I have to really rev it up to keep the car from stalling until it is warmed up. Idling is fine, this is only when I'm pressing the gas. After it is warmed up, it drives very nice.