So I have been thinking what next in the exhuast area I'm going to up grade for more power and good sound... What is better for sound and power...
-Tech works high flow cat(www.techworks.com)
Or
-Cat delete pipe(probably have it custom made )
And these are for a 2007 impreza 2.5i

...if anyone has some good feed back or some good info please let me know thanks
Jonathan

 

Knock out your stock cat in your mid pipe.

1) easy to do
2) free straight pipe
3) when cops look under your car you have the rusty stock piping with a cat shell on it.

 

So what you're saying is just have it straight piped with the existing shield covering the piper from the headers to the cat back...
And if cops tried looking under they would have to lie flat cause my car is inches off the ground lol

 

I thnk he means put the cat under water and take a hammer and chisel to the substrate. It will break it up and fall out. BUT!!!!!!!!!!!!! it has asbestos so be careful work in a well ventilated area and wear a mask !!!!!!

I say buy an exhaust with no cat. (I have no clue what the law is in canada)