I am in the process of learning about my wrx and what should go on it. Currently I have a Greddy catback exhaust on my wrx.
Here is my question. What is meant by the phrase "turbo back" exhaust. Naturally something about the turbo being in the back. I'm trying to find out what would be the best combination I should get.
For example, when I get an uppipe and downpipe, will my current catback be fine or will an exhaust similar to the sti type or a twin tip type of deal be better than a 3' pipe all the way to end end? I heard something about exhaust pressure being good, likewise about restriction (small pipe, cats) being bad.
Will my current catback be fine for when I get a new uppipe/downpipe, and also with my planned turbo upgrade, intercooler, stage tuning etc?
Also, which uppipe/downpipe should I get? I don't want to get the priciest, but I need something that will handle the VF34 and the boost that will be added later. What are things to look for when getting uppipe/downpipe given my requirments and current catback?
Your help and knowledge is much appreciated.