To start off I have a 2000 Toyota Celica GT, and I have a CEL on. At first I thought it was because of my Injen SRI throwing the code, so I took it out and replaced it with the stock air box. It goes off for a little while then comes back on. When I'm at a stop light and start to accelerate, it's like the car sputters and takes off REALLY SLOW. It will get up to about 3,500 rpm and then it will kick in. Also, when I start the car, it will turn over, but as soon as it turns over, it will idle really rough and the car will shake, but after about two seconds it will run normally. I've had the ignition coils replaced which helped with the starting part and the driving part a little. I've had my MAF checked, I was told I need a new one soon. After the coils were replaced, the CEL was cleared but came back on again. Now I'm being told it's the intake manifold gasket. The codes that its throwing are: P1071,
P0300, and P0303. HELP!!!!!!!!!!!!!!!