Lol you'll never believe this but at one point I never knew the difference between rasp and drone but all I Cared was for the Car to Purr inside the the cabin which then I found out I love drone lmao hahahaha!

On the other hand I swear these next few Hours have been giving me Anxciety Attacks I can't take it anymore!(jk guys) seriously though package is in San Antonio and I'm 4hrs away so I'm sure they'll scan it at 6am central time and maybe by 12-3pm it'll be in my door step, I Swear this is Better than Christmas! xD

So the 12" is muffled more then non-res and 18" is even more?

So would it be wrong to say that at idle the 12" and 18" block most noise and when you step on the gas harder you can hear both but the 12" would be louder? Or am I completely off?

No your on the right track of things but 12" isn't any comparison to Non resonated. I'm assuming 12" is a little loud deep growl by what I've seen on Youtube. Check out some vids there's a bunch of em now or maybe someone from here with a 12" res' d might chime in here, Good luck with decisions :)

Basically yes. 18 inch resonantors cut down the noise the most, 12 inch cut down a little less and non res doesnt cut anything. That being said I have 18 inch resonators and its definitely not "quiet". At least by my standards. I have k&n drop ins too so maybe that adds a little extra noise. When you get on it hard, regardless of whether you have resonators or not you and everyone around you will hear it:tup:

The resonators are really to break up the harmonic resonance of the pipes to help with 'drone' and to muffle the high-frequency "buzz" or "rasp" that comes from the high pressure exhaust pulses these cars generate. Without the resonators, you'll have a lot of low frequency "drone" at part throttle and you'll be able to hear the high pitched "rasp" at large throttle openings.

I see a few of the members above have given you very helpful information. If you have any questions at all about the exhaust, please do not hesitate to give me a call.

Thank you, Tony

Agreed I have 18" w/ CF cans and I wouldn't call it quiet. It's a deep sounding exhaust; I love driving to 4k and higher.

I got the cf non res'd CBE and it had very very little to no drone, depending on how sensitive you are to it. I like loud exhausts and this thing sounded great hitting the gas, but cruising at 60 I literally couldn't tell a difference from stock.

Once I put the long tube headers on however... Now it's borderline racecar sounding, with some drone between 2250-2500rpm. Still no rasp though. To be clear, I think of rasp as that high pitched sound when a civic hatchback with a giant fartcan revs their motor at you trying to get you to race lol.

I can't remember if I've posted this video in here, but this was taken with my camera at Zdayz in may. You can see all my mods in my sig.




I survived Zdayz 2013... (barely)

With my setup (non-res SS + longtubes) the rasp is unbelievable.

It may be that with your full interior + other noise etc that you just can't really hear it. You definitely can in my car.

well too you have the PPE headers and you're SS, both of those things may make some difference, idk.

https://fbcdn-sphotos-e-a.akamaihd.n...47064681_o.jpg

No Room? NO PROBLEM! But were getting it installed TODAY!

Woohoo!


I survived Zdayz 2013... (barely)

I've had my F.I. Exhaust installed as of this month for 3 years and 50k+ miles. Still loving every minute of it. :tup:

Dude as we speak its getting installed :D I swear I was pissed all morning due to the U.P.S guy never getting here and now just 1 more hour can't hurt xD

Go ahead and start massaging your face, cause once you hear that first fire-up and drive home, you won't be able to stop smiling.


:happydance: