modifying a wrx05 model

can someone please help me i recently purchased a wrx 05 model and a want to do some modifications to it i recently put a rear muffler on it and a gfb bov. i now want to make it quicker wats a safe boost level 2 boost it for and everyday driver?? ive been told you cant boost a new wrx as the computer will stuff up is this true??or am i better off getting a ekutek tune on it? i would prefere to get a full exaust system and boost it a little does any1 now if this is safe or do i have to get a ecu??

The max safe boost level has been discussed before, the search feature should answer your question.

can someone please help me i recently purchased a wrx 05 model and a want to do some modifications to it i recently put a rear muffler on it and a gfb bov. i now want to make it quicker wats a safe boost level 2 boost it for and everyday driver?? ive been told you cant boost a new wrx as the computer will stuff up is this true??or am i better off getting a ekutek tune on it? i would prefere to get a full exaust system and boost it a little does any1 now if this is safe or do i have to get a ecu??

If you are asking what you're asking, then you need to get uppipe, TBE, ECU remap (cobb AP, ecutec, utec, etc.) and go from there.

you can get a TBE without an ecu but you wont be getting the most potential out of your car....your stock ecu kind of re-learns itself and takes some HP away from the gained TBE so i suggest getting an aftermarket ecu and tune for its max potential

im a prime example, i drove my car with a TBE and stock ecu for about 3 months and i could kinda feel it was slowing down cuz the stock ecu was re-learning around it, so when i got my utec and tuned it all out it was HUUUUUUUUUUGE difference, like night and day, pulls really nice down low and in the midrange

i wouldnt boost more than 16.5 on the stock turbo either