hi guys i got a 04 cobra with a ported eaton, 2.8 up, 4lb lower. I have full exhaust work,accu throttle,and a 50 shot nos. just took the car to the dyno my results were not impressive. I only made 465hp & 533lbs torque. I was exspecting to be in the 500. with the nos i made 580hp & 601 torque. do these numbers sound ok? or is there something wrong with my combo?