Don't forget to remove the NEG cable fro the battery first. You must use the old MAF sensor in the new MAF housing. The screws can be hard to get out but you can get them. A new 'O' ring at the TB/manifold junction is a must as well. Careful the 'O' ring slips out of the groove causing problems. Careful on the torque as well on the TB. After making sure all the hoses are correctly reattached, rehook the battery up and start car. It will be rough (majority of the times) for a few as the ECU relearns the new TB. Do a throttle reset, and go for a spin. My install went without a hitch and never gave me a problem past the ECU relearn.