First of all, I am very new to the subaru world and I needed help. I would love to learn more about wrx's specifically B'cuz now that I have my dream car, I need some info about pros and cons to maintain my suby. For now, my mods are a 2.5 straight pipe exhaust and apex bov. first, it runned ****ty and then i tuned it so it then runs smooth. my only delema that im having is whenever i gun it, it seems theres a fuel cut or hesistation some sort of thing around 300 rpm. rpm goes down quickly and it jerks and then it goes back to normal driving mode. do u think its the down pipe cuz there is restriction? or the computer, dumping to much fuel. Thnx guys in advance. pardon me for my grammar..