im in the market for a programmer...i ahve a 2001 5.4....the local shop is telln me to go with the sst but i dont know much about programmers so figured id get some suggestions....they say tuned by them on the dyno that i mite get as much as 18 hp...does this sound rite???? price would be about 500$ including them tuning it on there dyno..... ??????? any info would be much appriciated