hi every one i got my self a mk5 escort 5 door gti, with a 2.1 turbo. but the car is not runnin good need to know wot i need to buy to make it run fast , as people say i need a remapable ecu. here is a list of wot has been done to my engine so far

2.0 zetec bottom end bored out to 2,1
2.1 forged pistons standerd conrods
1.8 16v zteck head with standerd cams
efi inlet manifold take of a 1.6 16v
2.0 mondeo injectors
2.0 mondeo aif flow mass meter with k and n filter
escort rst manifold
a garret hybird t4 turbo with twin blade a 360 trust bearin
a custom 3inch diamiter stright throw pipe
a large front mounted intercooler with dump valve
runin a staned gti gear box with standerd clutch
ans im runin the standerd gti ecu
a fuel pump of a 3.0

im now in need of know wot parts i need to make my car run some bhp as i went down the 1/4 mile last week and the best the car did was 16.0 . the car seems to not hold power in 3rd only goes to 4500rpms 1st ans 2nd redlines but all ways feels like its holdin back , any help would be much appricted thanks johnny