I was wonder if anyone has their custom dp , high flow cat, and exhaust on their cars and what they think about it? I know it looks really stock but i also want to know if you feel the difference in power gain compared to other brands. thanks

 

You might want to try the regional forums or http://socalevo.net/ where you'd be able to reach more of the SoCal people for their opinion. FWIW it's a 3" exhaust using Magnaflow mufflers so it should make as much or about the same as other exhausts using the similar components.

 

I have it along with their rally cat and 3 helix dp. I like it because is quite even though their rally cat is more like a testpipe since is just a resonated testpipe with heatshields making it look like a cat...my intake makes more noise than my exhaust and i do feel like it makes pretty good power....but you should visit socalevo.net like t51 suggested. they have plenty of pictures and reviews.