Iv got a 98 GT with P.I. heads, intake and cams and a tune everything else is stock 98 stuff. Iv changed fuel filter cleaned the mass air flow sencer and cleaned the airfilter as well. When driving in normal traffic you would not notice the problem at all but when you go to WOT the thing will booge like hell. Any ideas what will make this happen. Any advice will be great One other thing the motor runs smooth and dont miss fire.