Muffler Delete exhaust woes
04-28-2017, 11:42 AM
#1
Muffler Delete exhaust woes
I recently decided to do a muffler delete, and honestly it sounds great... with the windows down. For some reason when driving with the windows up it really amplifies the deep and annoying drone at 3-4k rpms. I have already completely sound dampened my front doors and have plenty to do most of my trunk. My question is, should I do the trunk? Or is there any way to put a muffler right before the Y in my catback straight pipe? Please refrain from negative comments regarding your distaste for muffler delete exhausts and keep it to suggestions on reducing the drone. Thanks
04-28-2017, 11:47 AM
#3
FULLY SEMI AUTOMATIC
iTrader: (9)
im sure you could custom fab a small round muffler between where the cat and the front of the muffler goes (OEM set up for reference) but im not sure how much it will help and probably burn out quick. i could recommend some reall good hearing protection i use for shooting depending on your budget lol
04-28-2017, 11:55 AM
#4
You can do anything that fits I'd you have the money or the skill and equipment.
Doing a custom setup takes about a full day (or 2 if things get tricky) and about $4-500 of pipe and mufflers ( for good SS stuff) ..and $1K of labor for install and welding
Doing a custom setup takes about a full day (or 2 if things get tricky) and about $4-500 of pipe and mufflers ( for good SS stuff) ..and $1K of labor for install and welding
04-28-2017, 11:56 AM
#5
Custom setup meaning a muffler on the midpipe? I've seen one guy recommend a magnaflow but I'll have to find the video.
Last edited by limitlesscodes; 04-28-2017 at 11:57 AM. Reason: ? Add
04-28-2017, 12:57 PM
#7
Yeah, ha ha ha. I suppose I can get the turboxs or whatever but quite a few people have said that will drone as well. I guess I was trying to figure out if anyone has been able to do a muffler on the midpipe and if that would even make a difference. I'm only like 200$ in on the exhaust but oh well...
04-28-2017, 02:35 PM
#8
What am I doing here?
Join Date: Mar 2006
Location: 2017 Miata RF Launch Edition
Posts: 3,606
Received 649 Likes
on
510 Posts
The drone is from the size of the cabin and from the specific frequencies emitted by the Renesis engine, itself. This is why, when one modifies their factory cat-back, they have difficulties avoiding the drone with the exception of two widely touted midpipes.
When you reach that specific RPM, your cabin is droning just like a poorly-made "subwoofer" box that has it's highest frequency output somewhere around 65-80 hz and with a very narrow Q factor.
When you reach that specific RPM, your cabin is droning just like a poorly-made "subwoofer" box that has it's highest frequency output somewhere around 65-80 hz and with a very narrow Q factor.
I wonder if you could alter the resonance/harmonics of the cabin enough by keeping light but rigid objects in the back seat.
04-29-2017, 08:21 AM
#10
Enjuhnear
The drone is from the size of the cabin and from the specific frequencies emitted by the Renesis engine, itself. This is why, when one modifies their factory cat-back, they have difficulties avoiding the drone with the exception of two widely touted midpipes.
When you reach that specific RPM, your cabin is droning just like a poorly-made "subwoofer" box that has it's highest frequency output somewhere around 65-80 hz and with a very narrow Q factor.
When you reach that specific RPM, your cabin is droning just like a poorly-made "subwoofer" box that has it's highest frequency output somewhere around 65-80 hz and with a very narrow Q factor.
. Let's turn our exhaust systems into notch filters while we're at it.
04-29-2017, 03:33 PM
#11
Enjuhnear
