WTK best piping size exhaust for 4g91

[SweeP]

i have ah 4g91 fuel injected A\T but i would like to know if i put extractors if to remain with the same stock size piping or go 2inch. i know if the piping too big the car would lose power as it is not a powerful engine so any advice ppl????

[dutyspeed]

2'' will work great

[SweeP]

thanks dude!!!!!