I were had enginge vibrates when idle/move, after I change my spark plugs & ignation coils/Wires become stable & got better response. Stock parts replaced by Iridium IX,
,Screamin' Demon Coil, LiveWires. hope thats help.
Stang 2006 V6
octane 95,3-CORE BOLT-ON ALUMINUM RADIATOR+TRANSMISSION OIL COOLER,NGK Iridium IX,
Auburn Gear 542023 Auburn Gear HP Series Limited Slip Differential,Screamin' Demon Coil LiveWires,Motive 4.10 Gears, JLT Next Generation CAI and SF3 Tuner, more to come