I got my 06 WRX limited not too long ago and am still sort of shopping and researching what parts I want to put on. For the time being though I've removed my muffler and it sounds just like a Subaru should. By doing this I know at lower rpms I don't get the power and it can almost bog down a little. Am I hurting anything by having the muffler off until I fit a new system on there?

 

Put it back on... And change it out when you get another

 

Yep. Have some class.....

 

Basically, its hit or miss...
Should you remove your muffler? No.
When you removed the muffler, you lost backpressure. You now have a better flowing exhaust, but you dont have a tune to add more fuel. So you are running lean, especially in higher rpms.

Thats pretty much the easiest answer.
Get a real exhaust, get an accessport. Throw an off the shelf tune on it and enjoy.
Eventually, once you have whatever mods you have planned done, go get a pro tune...

 

I'm on the same boat! I just got my 06 limited about a month ago and also looking into initial parts. Let me know how it's going and how much you put into that exhaust.

 

Car sounds great, like I said not any noticeable difference in performance. You get that subbie rumble. I'm putting on an Invidia muffler and down pipe whenever they come in but for the time being it works.

 

You asked for advice...
Advice given.
But yet you decide not to listen. Which makes this thread pointless. Ain't no one got time fo' dat.

Any way, when you put a DP on make sure to have some sort of tuning (ap or custom tune) these cars don't like downpipes without a tune . Good luck.