Well ive changed my EVAP solenoid, my EGR valve, and my MAFS, Finally my idle is perfect, my only problem now is, my car looses power at about 4700 RPM and bogs down, im not sure why ?? ANY IDEAS ANYONE??</P>


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98 mustang GT</P>

 

could be a lot of things
1st check fuel pressure at 4700 rpm
2nd ..new fuel filter
3rd..need results of fuel psi