Just got everything installed and I got a couple problems. I'm sure someone here can help with both of them. The check engine light is staying on all the time right now and I think it has something to do with both problems.

1. Got it all installed and the car runs, but loses power and starts backfiring at around 4500rpms.

2. There's 3 identical plugs on the back of the engine, and only 2 sensors to plug them into? One of the plugs comes out of a harness with the MAP sensor and the TPS, and the 2 others are just bundled together. I know one of these goes to the idle air controller, and the other goes to the little white sensor on the back lower side of the intake plenum(purge sensor?), but I don't know which goes where, much less what to do with the third plug.

Any help or suggestions would be appreciated!

-J