I have the 60mm injen cat-back and I have a question

[20civic07]

Well, I had been driving around without the stock cat-back on because I was waiting for my exhaust to get here (only drove a few miles to get some misc parts for the install) and it was f*king loud, way too loud. I felt bad for the community because it was so loud. Well, exhaust came, slightly damaged, tar covered and no gaskets/bolts. I went to go purchase all of the missing parts because the seller had cheated me (slostjoe DO NOT buy from him, have emailed him multiple times, and called his cell multiple times no answer) and had the injen exhaust installed. Okay it's installed, but still the exhaust is f*king loud, but this time from the muffler instead of the end of the cat.

Question is: What size diameter of a resonator should i buy? the injen is supposed to be 60mm piping, but i measured it and the actual diameter of the opening was something like 53mm but the pipe was a full 60mm. I am new to exhausts so I'm not sure which diameter to take from.

Also, if you have this exhaust, you will know that there is a pipe that connects from stock cat to the actual piping of the cat-back, sort of a straight pipe. Does anyone know how long this is? I am hoping to find a resonator that is exactly the same length and weld flanges to it to have a direct fit with the exhaust.

[20civic07]

bump!