I'm getting a custon 2.5 inch exhaust with a hi flow cat and a magnaflow muffler. I've heard that even with a high flow cat the magnaflow can still be a little raspy. Should i just go ahead and pick up a kteller resonator here http://www.kteller.com/store/p...d/713 to lower the tone a bit more? Or are there any better resonators someone wants to suggest? And the resonator on kteller is 18 inches, is that ok?

 

Which hi flo cat are you going with?

https://honda-tech.com/zerothread?id=1323923

https://honda-tech.com/zerothread?id=1115623

A resonator should cure the problem to a degree, but I am not sure how much.

 

magnaflow carsound high flow cat

 

Take a look at the first post. There are some higher flowing cats. SMSP did some testing. You might change your mind, you might not.

 

yeah, i just saw that but i already have the high flow cat, i would just need to get a resonator now.

 

oh, and I can get the resonator 14", 18", or 22" inches long for the same price. Which size should i get? What's the difference?

 

the longer the resonator the more it will quiet the exhuast.

I had a 18" on my JUN head with no cat and it wasnt raspy. 18" should be fine. If you want to make damn sure, get the 22".

 

You should measure the distance from your cat to the closest bend, you need to make sure there's enough straight length of piping before the bend in your exhaust. 22" might be too long, you also have to consider there's a hanger about 1/4 of the way from my stock cat to the next bend, guess that doesn't make much of a difference, but it'd mean more work because youd have to weld a hanger onto the resonator if it gets in the way.