I just installed a BBK Off Road H Pipe. I bolted everything in, and connected the O2 sensors. When I went to start my car it sounded amazing, but when i went to shift into drive it wouldnt. For some reason it is stuck in park. I have no idea why this is. I have a 96GT Auto Trans. Is there a pipe made just for manual trans? Would that be why it doesnt work. I have to model number 1565. I was positive that was the right one. Could someone please tell me what I need to do to fix this. THANK YOU!