FI Non res vs resonated CBE

TaroBaapG35 · 07-31-2015, 02:05 PM

Quote:

Originally Posted by ReeceZ

I don't mind a little drone. For my eargasms, i welcome it. But if it starts causing more stuff to rattle, squeak, creak. Especially in that soft top, then I'll go 18". Wonder if there was ever a poll done 12" vs 18"?

Honestly. It all depends on how sensitive your ears are along with how much "noise" you're looking for in terms of Exhaust sounds. When I bought the NR CF i had only heard a 12" Res + NR HFC in person, and I couldnt stand the added "hiss". And it was a DEEP sound. I would say 12" is the perfect midpoint for Loud (when on throttle) and quiet when cruising. Just know in colder temps (50Fs and lower + cold starts) will be even louder.

I'll post a vid from inside the car later tonight (again it'll be NR CF).

CF = Higher pitch 3K Rpms+
SS = Deep = Entire Rev Band

ReeceZ · 08-03-2015, 05:31 AM

So I tried, something new to compare the sound difference from stock and other exhaust systems. I recorded my car on hard pulls, cold starts, warm starts, normal driving just to hear what it sounds like after being recorded. Then comparing those sounds to the YT vids helps me better understand the difference. I mailed Kevin @ FI. Just waiting his response.

mattanthony23 · 08-03-2015, 02:14 PM

Quote:

Originally Posted by ReeceZ

So I tried, something new to compare the sound difference from stock and other exhaust systems.

ReeceZ, I just posted 3 videos on YouTube that can help you decipher the difference between stock exhaust and non-res SS. Hope they help:

https://youtu.be/aqCcQr1de00

https://youtu.be/aRPAybRLqcw

https://youtu.be/jHbmchjb9so

Rusty · 08-03-2015, 07:39 PM

I'm running the LTH's, 12" resonators, and CBE. There is a slight drone between 2500 to 3000 rpm. In the video. I have the mike taped between the exhaust tips.

SwissCheese · 08-03-2015, 08:59 PM

Quote:

Originally Posted by Rusty

I'm running the LTH's, 12" resonators, and CBE. There is a slight drone between 2500 to 3000 rpm. In the video. I have the mike taped between the exhaust tips.

You can really here that hiss!

markesc · 08-08-2015, 10:29 PM

Quote:

Originally Posted by SwissCheese

You can really here that hiss!

Is this how they all sound?

It sounds mean, but it sounds mean with an O-ring/exhaust leak somewhere, or a flex pipe caused sound? Or is this because of where the MIC was installed?

Please advise...

SwissCheese · 08-08-2015, 10:42 PM

Quote:

Originally Posted by markesc

Is this how they all sound?

It sounds mean, but it sounds mean with an O-ring/exhaust leak somewhere, or a flex pipe caused sound? Or is this because of where the MIC was installed?

Please advise...

The hiss comes from removing the stock catalytic converters. The sound is always there, but it's normally muffled by the stock cats. When removed (with long tube headers, test pipes, or sometimes with high-flow cats), the hiss becomes much louder.

Rusty · 08-08-2015, 10:56 PM

Quote:

Originally Posted by markesc

Is this how they all sound?

It sounds mean, but it sounds mean with an O-ring/exhaust leak somewhere, or a flex pipe caused sound? Or is this because of where the MIC was installed?

Please advise...

There is no leaks in that exhaust.

ReeceZ · 08-10-2015, 12:44 PM

Quote:

Originally Posted by SwissCheese

You can really here that hiss!

Tell your passengers the car is turbo'd. Never heard a hiss that loud before. Guess it must be the LTH. It sounds like an Aston Martin though

FPenvy · 08-10-2015, 12:59 PM

Quote:

Originally Posted by ReeceZ

Tell your passengers the car is turbo'd. Never heard a hiss that loud before. Guess it must be the LTH. It sounds like an Aston Martin though

with y mufflers off and less back pressure my "hiss" is extreme lol

it's funny at shows/meets when I catch people under my car or in my hood searching for the turbos

Rusty · 08-10-2015, 03:50 PM

Quote:

Originally Posted by ReeceZ

Tell your passengers the car is turbo'd. Never heard a hiss that loud before. Guess it must be the LTH. It sounds like an Aston Martin though

When I do trackdays. Guys there say I have one of the best sounding cars there. Driving the car, I don't hear the hiss at all.

08-03-2015, 07:39 PM	#4 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,571 Drives: 2011 Nismo GM 6M Rep Power: 2684440	I'm running the LTH's, 12" resonators, and CBE. There is a slight drone between 2500 to 3000 rpm. In the video. I have the mike taped between the exhaust tips. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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08-03-2015, 05:31 AM	#2 (permalink)
ReeceZ Base Member Join Date: Dec 2013 Location: South Africa Posts: 44 Drives: 370ZR Rep Power: 3368	So I tried, something new to compare the sound difference from stock and other exhaust systems. I recorded my car on hard pulls, cold starts, warm starts, normal driving just to hear what it sounds like after being recorded. Then comparing those sounds to the YT vids helps me better understand the difference. I mailed Kevin @ FI. Just waiting his response.