i seem to be fine at idle but when i slow down or come to a stop, the idle drops to 100-200 and goes back and forth and almost stalls. pro flow says at idle the maf should be between .7 and .9. i currently have it at around .8. my idle was always at around 500, ever since i bought it new...i obviously can't go to ford to fix it and i don't want to really "throw away" the mod....i need help...