2008 CHRYSLER 300C, 2013 eagle heads with a 220/230 comp cam and long tube headers. my question is, what vehicle should i base my tuning on? 5.7 that was bored 10 over? or the heads? or the cam? with all i have, not much torque or power! most im seeing is 200 from motor and/or the transsmision. i got where i am now by raising the spark but i think ive ran out of room for more torque! any suggestions? also, surging at a stop light with up to 35lbs at idle in gear.