i got a 1996 impala ss stock lt1 with a rebuilt 460le with shift kit, all are a year old- spark plugs, wires, Accel 26lbs 14.4 ohms Impendance fuel injectors,duralast EGR. its got a flowmaster exhaust on it and a 160 degree stat. thats pretty much it. my dad said brand new the car would burn rubber on a green light now it takes off slow, i guess what im saying i have no power at low rpms then it used to have. just wondering what i could do to fix it???