IndyCivic

Hey whats up everyone. I have two cars with problems. I have on all motor d15b7 running 11;1 compression and a mini-me vtec. On my B7 my car only idles if I rev it until its hot. Then only sometimes it idles ok. I have changed the IAC 4 times. It keeps thowing code 14 anyway. It also throws a IAT code. I haven't changed it yet. This is my first all motor car. I am used to low compression turbo motors. If anyone has any experience with high compression engine all help is appreciated. ON MY MINI ME, If I rev it pass about 4500 rpm's it likes to start to sputter and if I keep doing it, it will sputter until its dead. I also cant find a good timing belt for it. I used the z6 but I am scared it is going to come off. Thanks for your time, and I appreciate all of the help. Zach