your car is going to be a bit louder than it is right now. I dont know how all the exhaust pieces put together makes your car sound, but I have a blitz nur spec catback, invidia downpipe, and helix flex uppipe, therefore making my car completely catless and my car is insanely loud. I'm starting to get tired of how loud it is. At first it was pretty cool but now I get so many headaches. I set off tons of car alarms too.

 

I set off car alarms with just the Ansa Catback

 

I hate to be the bearer of bad news, but Borla exhausts are chambered and not straight through, so you seeing flames is almost impossible.

I have a STi Up-pipe, helix high flow cat downpipe, and borla hush, with the resonator removed and a 3 inch flange adapter.

I think your exhaust and mine will be something like the same, you have a resonator and I have a cat. I backfire often and all my friends see is a small amount of black smoke, thats it.

Good luck
Rush