Started about a month after I put in the SVT stuff including the injectors. My car boggs below 3500 RPM when I floor it. Above 3500 no problem. No CEL, though it has flashed once while WOT below 3500 and it came on once for 3 days rich condition bank 1 but it shut off by itself? It's been doing this for 8-10 months.
My friend has a Cougar with the exact same mods as me + a y-pipe and his doesn't bogg at all with the injectors at WOT at any RPM. Could I have a bad O2? Checked the front 3 plugs, not loose, couldnt get to the rear ones but I will be replacing all 6 with new wires in a week or so.