I have a 90 mustang lx 5.0. the car has been sitting for about 10 years now and i just got on the road. I put a BBk cold air intake and it also has dual flowmaster 40 series mufflers. When I pull out on the road to take off and get the motor up to about 2000 RPM's it starts to pop and falls on its nose. It has just about enough power to keep it running. Here is a list of the stuff I have done to try to fix it, new spark plugs, new fuel filter, new modgule on the distributor, I also checked the pressure in the fuel lines which is at about 35 psi, and lastly i cleaned the catalytic converter's out but still have the problem. Once you try to run it and check under the hood the bottom of the headers where there flandged is glowing red. I have no idea what to do next so any help is greatly appreciated.