Shkreet Car Interior Deshibul Levelsh
07-25-2018, 04:16 PM
#102
Junior Member
Join Date: Feb 2014
Location: Columbus, IN
Posts: 324
Total Cats: 37
I still have my stock exhaust if you want to try it...it would be interesting to see how loud the stock muffler is with the RB midpipe. The inlet pipe on the stock muffler is soooooo small...it's like 1.5". It would definitely eliminate any flow gains achieved with the RB midpipe and header.
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01-13-2019, 12:54 AM
#103
Senior Member
Join Date: Mar 2011
Location: Louisville ky
Posts: 583
Total Cats: -114
You ever figure this out?
I have a sjmilar setup and it's amazing! Almost no drone. Just great sound.
Its a stock 99 nb, with factory manifold, flyin miata mid pipe with cat and resonator and racing beat power pulse axle back. I love it.
I have a sjmilar setup and it's amazing! Almost no drone. Just great sound.
Its a stock 99 nb, with factory manifold, flyin miata mid pipe with cat and resonator and racing beat power pulse axle back. I love it.
Last edited by atli126; 01-14-2019 at 10:04 AM.
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01-14-2019, 06:07 PM
#107
Junior Member
Join Date: Sep 2010
Location: QLD, 'straya
Posts: 171
Total Cats: 36
I know the GoPro mic will be ****, but I'd still like to hear it. It will be comparable to listening to other GoPro onboards and more useful than external recordings.
On a previous car with the stock BP I used the Maximworks manifold, RB cat, RB unresonated midpipe and RB muffler and it was very much quieter than I anticipated both inside and out.
On the current car w/built motor and the same exhaust setup it was quite a bit louder, so changed to the RB resonated midpipe in and the noise level was appropriate again.
Car has carpet, but none of the undercarpet fluffy crap.
I do think it can be slightly droney at highway cruise, and its a bit more droney than 6 years ago when I first bought it, but I don't think the volume level is excessive. That's why I'm curious to hear your cabin recording.
On a previous car with the stock BP I used the Maximworks manifold, RB cat, RB unresonated midpipe and RB muffler and it was very much quieter than I anticipated both inside and out.
On the current car w/built motor and the same exhaust setup it was quite a bit louder, so changed to the RB resonated midpipe in and the noise level was appropriate again.
Car has carpet, but none of the undercarpet fluffy crap.
I do think it can be slightly droney at highway cruise, and its a bit more droney than 6 years ago when I first bought it, but I don't think the volume level is excessive. That's why I'm curious to hear your cabin recording.
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02-15-2019, 03:45 PM
#112
Newb
Join Date: Oct 2014
Posts: 10
Total Cats: 0
Still working on this or am I resurrecting a dead thread?
Either way: in my NB1, I had a RB header -> resonated catless mid-pipe -> RB muffler and the thing was murder with a no-headliner hardtop. I hated to drive it.
Two things improved it:
1) putting in a resonated AND catted high flow mid-pipe. The extra restriction of the cat helped a bit with the drone.
2) adding fabric in the cabin. I noticed that the drone was significantly reduced when I was using the soft top vs. the no-headliner hardtop. So next winter, I tested this with a literal towel taped to the ceiling and it worked like a ghetto acoustic panel. Less sound bouncing around in a fiberglass cabin = less drone.
So - I'd look to tune your exhaust a bit more with a resonator, and add a headliner if you don't have one - or make it thicker if you already have one.
Either way: in my NB1, I had a RB header -> resonated catless mid-pipe -> RB muffler and the thing was murder with a no-headliner hardtop. I hated to drive it.
Two things improved it:
1) putting in a resonated AND catted high flow mid-pipe. The extra restriction of the cat helped a bit with the drone.
2) adding fabric in the cabin. I noticed that the drone was significantly reduced when I was using the soft top vs. the no-headliner hardtop. So next winter, I tested this with a literal towel taped to the ceiling and it worked like a ghetto acoustic panel. Less sound bouncing around in a fiberglass cabin = less drone.
So - I'd look to tune your exhaust a bit more with a resonator, and add a headliner if you don't have one - or make it thicker if you already have one.
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02-15-2019, 04:03 PM
#113
Junior Member
iTrader: (1)
Join Date: Jul 2018
Location: Coral Springs, FL
Posts: 187
Total Cats: 57
Still working on this or am I resurrecting a dead thread?
Either way: in my NB1, I had a RB header -> resonated catless mid-pipe -> RB muffler and the thing was murder with a no-headliner hardtop. I hated to drive it.
Two things improved it:
1) putting in a resonated AND catted high flow mid-pipe. The extra restriction of the cat helped a bit with the drone.
2) adding fabric in the cabin. I noticed that the drone was significantly reduced when I was using the soft top vs. the no-headliner hardtop. So next winter, I tested this with a literal towel taped to the ceiling and it worked like a ghetto acoustic panel. Less sound bouncing around in a fiberglass cabin = less drone.
So - I'd look to tune your exhaust a bit more with a resonator, and add a headliner if you don't have one - or make it thicker if you already have one.
Either way: in my NB1, I had a RB header -> resonated catless mid-pipe -> RB muffler and the thing was murder with a no-headliner hardtop. I hated to drive it.
Two things improved it:
1) putting in a resonated AND catted high flow mid-pipe. The extra restriction of the cat helped a bit with the drone.
2) adding fabric in the cabin. I noticed that the drone was significantly reduced when I was using the soft top vs. the no-headliner hardtop. So next winter, I tested this with a literal towel taped to the ceiling and it worked like a ghetto acoustic panel. Less sound bouncing around in a fiberglass cabin = less drone.
So - I'd look to tune your exhaust a bit more with a resonator, and add a headliner if you don't have one - or make it thicker if you already have one.
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02-15-2019, 04:36 PM
#114
Still working on this or am I resurrecting a dead thread?
Either way: in my NB1, I had a RB header -> resonated catless mid-pipe -> RB muffler and the thing was murder with a no-headliner hardtop. I hated to drive it.
Two things improved it:
1) putting in a resonated AND catted high flow mid-pipe. The extra restriction of the cat helped a bit with the drone.
2) adding fabric in the cabin. I noticed that the drone was significantly reduced when I was using the soft top vs. the no-headliner hardtop. So next winter, I tested this with a literal towel taped to the ceiling and it worked like a ghetto acoustic panel. Less sound bouncing around in a fiberglass cabin = less drone.
So - I'd look to tune your exhaust a bit more with a resonator, and add a headliner if you don't have one - or make it thicker if you already have one.
Either way: in my NB1, I had a RB header -> resonated catless mid-pipe -> RB muffler and the thing was murder with a no-headliner hardtop. I hated to drive it.
Two things improved it:
1) putting in a resonated AND catted high flow mid-pipe. The extra restriction of the cat helped a bit with the drone.
2) adding fabric in the cabin. I noticed that the drone was significantly reduced when I was using the soft top vs. the no-headliner hardtop. So next winter, I tested this with a literal towel taped to the ceiling and it worked like a ghetto acoustic panel. Less sound bouncing around in a fiberglass cabin = less drone.
So - I'd look to tune your exhaust a bit more with a resonator, and add a headliner if you don't have one - or make it thicker if you already have one.
As for the midpipe, i'm torn between my OCD wanting matching things, and a midpipe being an easy thing to replace.
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