Hey guys, I just dropped a reman 351W EFI into my 90 Bronco...old one had 160k on it. When we swapped it in we put all new parts in i,e: distributor, cap, rotor, plugs, wires, cleaned all the parts. Since the manifolds were cracked I went with JBA headers and I put the stock air box with a K&N back in. I've been told that a new motor takes about 5k miles to start to feel broke in and up on power. Right now I've got 1200 miles and it feels like a dog. Where before it could hold it's own in OD, you need to kick down to 3rd and this is just to hold speed. I know the heat and AC use here in Vegas will take its toll, but this seems way too much. We also put a new torque converter in it and the tranny and trans case have about 16k miles on them. The guys who helped me drop this engine in is fairly stumped as to why the engine feels like its plugged. He recommended checking the catalytic converter and the ignition timing advance. It runs real well, just feels like no power. I put the FIPK back on it and that seemed to help, but it's still not pulling in OD on the highway. I am getting really frustrated that I put this much time and money into it and it runs down on power. Any ideas, suggestions or advice would be so great. I'm at the end of my rope here...I'm getting tempted to sell it cause I'm tired of pouring money into it. Thanks for your help.