What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[kbuskill]

Without the slp...no i havent. With the windows down its not as bad but in this state my windows are up 85+% of the time.


Haha kenny the simple fix..

Did you notice much of a difference in sound level without the resonator VS with it???

I doubt it makes much overall difference other than the drone factor.

 

[Drok]

it was just a bit louder and it had more of a straight pipe sound vs a nice deep grumble of truck.

 

[iamdub]

Its been a couple days and i may just say heck with it and put the resonator back on.. it has an annoying drone at certain rpms and up hills it sucks.. oh well

You might just be more sensitive to that particular range of frequencies, kinda like some people's ears are sensitive to the buffeting of the 2015+ SUVs while others don't hear/feel it. I could BARELY hear a difference when I removed my resonator and I had to really listen for it. Others here report a more significant change in sound. Maybe if we tested the sound electronically before and after to eliminate the varying human factor, we'd find there is a clear and distinct difference among all of them. Actually, I'm sure this was done and is why GM engineers added the resonator. If a tree falls in a forest and no one is around to hear it, does it still make a sound? It does, we just may not hear it. If a resonator is removed, does it change the sound? Going back on the buffeting thing, I'm starting to think that all the new SUVs do it due to their aerodynamics. It's just that some people's ears may not be "sealed" as well (more or less sensitive to pressure pulses) or otherwise "tuned" to the offending frequencies or pressure pulses.

 

[iamdub]

I've got a MF knockoff, basically a 12589 and it doesn't drone at all. Pretty calm at cruise and louder as you get into it.

Just a thought, have you run it without the SLP? Tailpipe lengths can have an effect on drone.

@NGAneer: I remember researching your brand and model of muffler when you posted it a month or so ago, but I don't recall any of the details now. What was it again?

 

[Drok]

You might just be more sensitive to that particular range of frequencies, kinda like some people's ears are sensitive to the buffeting of the 2015+ SUVs while others don't hear/feel it. I could BARELY hear a difference when I removed my resonator and I had to really listen for it. Others here report a more significant change in sound. Maybe if we tested the sound electronically before and after to eliminate the varying human factor, we'd find there is a clear and distinct difference among all of them. Actually, I'm sure this was done and is why GM engineers added the resonator. If a tree falls in a forest and no one is around to hear it, does it still make a sound? It does, we just may not hear it. If a resonator is removed, does it change the sound? Going back on the buffeting thing, I'm starting to think that all the new SUVs do it due to their aerodynamics. It's just that some people's ears may not be "sealed" as well (more or less sensitive to pressure pulses) or otherwise "tuned" to the offending frequencies or pressure pulses.

My hearing is messed up from the military, but i get what your saying.
if my muffler was stock im sure it would be different, its not its the bw300 and it send drone and vibrations through the truck when the cabin is closed up.

 

[PG01]

Its been a couple days and i may just say heck with it and put the resonator back on.. it has an annoying drone at certain rpms and up hills it sucks.. oh well

Really? 24 hr trip to Florida and i didnt notice.....oh wait, you have an muffler on it right? Shit that sucks, sorry bud...

 

[PG01]

I've got a MF knockoff, basically a 12589 and it doesn't drone at all. Pretty calm at cruise and louder as you get into it.

Just a thought, have you run it without the SLP? Tailpipe lengths can have an effect on drone.

Mine was louder without slp or resonator and stock muffler

 

[Drok]

Really? 24 hr trip to Florida and i didnt notice.....oh wait, you have an muffler on it right? Shit that sucks, sorry bud...

Haha yup, i just cant leave well enough alone sometimes lol

 

[kwOH]

A full led 3rd? What's the price on that?

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Thats what i thought, looks full to me, its $135.


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[kbuskill]

Thats what i thought, looks full to me, its $135.


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If it is full width LED for that price it must be great quality ... lol