lacks power

GIL-03

New Member
Aug 16, 2009
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i have an 03 GT automatic that lacks power.
I have mac cold air intake
poweraid spacer
75mm throttle body
bbk headers
bbk crossover pipes w/no cats
flowmaster
pulley kit
superchips programer
msd coil packs

recent oil change
recent tune up
recent tranny oil and filter change

it feels slugish when i take off from the light (not racing) at regular speeds.
any ideas?
not misfiring, and no codes
please help
thanks ,
gil