hi, first of all, i don't own an wrx yet, but am in the process of looking for an 04 wrx wagon. Planning to do for exterior: STI bumper splitter, painted side skirt, lower car for about an inch, STI bbs rims. Performance wise i only plan to do the exhaust. My questions are:
Would the 04 sti down pipe fits the 04 wagons?
If it does, with the sti down pipe and the stromung 3" mid pipe with 2.5/3" dual tip exhaust i am planning to add, would i need a tune the car or the stock ecu can handle the light modification i described? I have read another article on this website, that someone switch to stromung exhaust also, but didn't need a tune. Would the addition of the sti down pipe makes a tune necessary?
Thank you for reading.