I did want to let everyone know.I checked and looked at a lot of things trying to correct the surging idle problem on my 93 coupe.It was chocking down and surginging from300 to 1600 RPM.I carried it to Bernie Prince in Bolingbroke,Ga.I watched him work on the car,he was all over the engine checking and correcting problems.In about an hour or less he had my mustang running like new.This car has a Ford E cam ,long tube headers ,trickflow intake ,GT40 heads roller rockers,and H pipe.It is very drivable now,Bernie Prince knows his stuff.They showed me also they also work on other cars and problems.I was amazed and thankful for the job well done.His shops name is Performance Center Inc.Bolingbroke,Ga.Thanks for a job well done.