MS vs RB exhaust system 1-Introduction
#52
Registered
Thread Starter
Originally Posted by swoope
a 3" exhaust will flow more... i dont know what the back pipe on the rb is. i would measure it....
i will say the back pipe on the ms is 2.5" and loud does not = flow....
the stock exhaust and the borla have 3" back pipes also the turbo xs...
beers![Beer](https://www.rx8club.com/images/smilies/beer.gif)
i will say the back pipe on the ms is 2.5" and loud does not = flow....
the stock exhaust and the borla have 3" back pipes also the turbo xs...
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#54
Zoom-Freakin'-Zoom
iTrader: (5)
Originally Posted by Raptor75
I believe it will make little difference for a bolt on system since the pipe is reduced to fit the OEM CAT. You have a chock point that will determine your flow.
look at the photos, this is the stock vs ms / corksport.
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#55
Originally Posted by swoope
the choke point is in the gasket between the exhaust header and the cat...
look at the photos, this is the stock vs ms / corksport.
beers![Beer](https://www.rx8club.com/images/smilies/beer.gif)
look at the photos, this is the stock vs ms / corksport.
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#56
Registered
Thread Starter
Originally Posted by swoope
the choke point is in the gasket between the exhaust header and the cat...
look at the photos, this is the stock vs ms / corksport.
beers![Beer](https://www.rx8club.com/images/smilies/beer.gif)
look at the photos, this is the stock vs ms / corksport.
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#57
Zoom-Freakin'-Zoom
iTrader: (5)
Originally Posted by Raptor75
Understood I was just pointing out that unless the whole system is of the larger pipe diameter the large piping at the back half will have little effect. If you have the large piping through the whole system and custom fit the RB to it then we are back at needing a dyno test to tell the real story.
so going from the stock dia to anything smaller seems counterproductive to me...
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#58
Registered
Thread Starter
The MS is at least as large as stock and the RB is about .5 inch larger but has a OEM size chock point at the connection. You have to remember that even though the CorkScrew and MS dual look alike their construction is different. Take a look at the front of this thread I have a picture of both MS and RB connectors there, they both look larger then the CS.
#59
Zoom-Freakin'-Zoom
iTrader: (5)
Originally Posted by Raptor75
The MS is at least as large as stock and the RB is about .5 inch larger but has a OEM size chock point at the connection. You have to remember that even though the CorkScrew and MS dual look alike their construction is different. Take a look at the front of this thread I have a picture of both MS and RB connectors there, they both look larger then the CS.
we are talking about the ms dual can correct... do you have a measurement of the back pipe? that is info i dont have...
thx.
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#60
Registered
Thread Starter
Originally Posted by swoope
we are talking about the ms dual can correct... do you have a measurement of the back pipe? that is info i dont have...
thx.
beers![Beer](https://www.rx8club.com/images/smilies/beer.gif)
thx.
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#61
Zoom-Freakin'-Zoom
iTrader: (5)
Originally Posted by Raptor75
No, unfortunately I didn't think of getting that at the time.
then we are both right i think... yes the non duel ms exhaust is the same dia as the stock...
i am pretty sure that the ms duel can is the same as the corksport at 2.5 " as the photo shows.
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#62
Registered
Join Date: Oct 2004
Location: New York, Northern NYC Burbs
Posts: 601
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by swoope
great write up..
and as someone that had and liked the corksport/ms.... the drone was to much....
to all if you are going to do the ms, sound proofing the trunk does not fix the problem....
beers![Beer](https://www.rx8club.com/images/smilies/beer.gif)
and as someone that had and liked the corksport/ms.... the drone was to much....
to all if you are going to do the ms, sound proofing the trunk does not fix the problem....
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#63
Zoom-Freakin'-Zoom
iTrader: (5)
Originally Posted by salituro64
Is there a way to eliminate the drone? Just installed my MS last week and I love the sound and haven't noticed the drone.
the drone is subjective.. at my mature age, i am not as tolerent. i spend a lot of time on the highway right at the speed that it was bothering me..
if you have it with a stock cat it might not be as bad...
spin9k did a write up of adding padding to the trunk area to help. i did add it and it helped a bit..
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#64
Registered
iTrader: (2)
Sound dampening material on the trunk floor and trunk lid helps cut the sound a lot.
With a midpipe and the Greddy SP2 I don't realize how loud it is until I am driving next to another car. Recently I heard a JIC single outlet exhaust without the silencer installed. That was loud, it sounded like a subwoofer constantly reverberating inside the car.![Lol](https://www.rx8club.com/images/smilies/lol.gif)
With the silencer it was a bit louder than my setup and he was running the stock cat with resonator.
The Greddy SP2 with the stock cat is not much louder than stock. A lot of people have said it is a loud exhaust but it is not. Compared to the MS and RB I would say it is in the middle.
With a midpipe and the Greddy SP2 I don't realize how loud it is until I am driving next to another car. Recently I heard a JIC single outlet exhaust without the silencer installed. That was loud, it sounded like a subwoofer constantly reverberating inside the car.
![Lol](https://www.rx8club.com/images/smilies/lol.gif)
With the silencer it was a bit louder than my setup and he was running the stock cat with resonator.
The Greddy SP2 with the stock cat is not much louder than stock. A lot of people have said it is a loud exhaust but it is not. Compared to the MS and RB I would say it is in the middle.
#67
Registered
Thread Starter
Originally Posted by salituro64
Is there a way to eliminate the drone? Just installed my MS last week and I love the sound and haven't noticed the drone.
Last edited by Raptor75; 02-01-2007 at 12:32 PM.
#68
Registered User
Join Date: Oct 2006
Location: San Antonio, TX
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Very interesting reading guys! Thx Raptor75 for the write up!
I just ordered the racing exhaust from Racing Beat... since the RX-8 is my daily driver I hope I can live with it...
I just ordered the racing exhaust from Racing Beat... since the RX-8 is my daily driver I hope I can live with it...
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
#69
Registered User
Join Date: Nov 2003
Location: Glendale, CA
Posts: 3,281
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by RevURGT3
Very interesting reading guys! Thx Raptor75 for the write up!
I just ordered the racing exhaust from Racing Beat... since the RX-8 is my daily driver I hope I can live with it...![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
I just ordered the racing exhaust from Racing Beat... since the RX-8 is my daily driver I hope I can live with it...
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
I'm thinking I may be going back to the RB unit again, since I am NA again and I want to get a hi-flow cat. My JIC is quite a bit louder than the RB, and when I had the RP Supercat on it a little while ago (melted/failed when I blew my engine, but I had it on for a little bit after I went back to NA). So I think I will get another supercat, but get a quieter/mellower exhaust.
#71
I'll snap his neck.
alnielsen and I had our cars side by side parked a couple months back. We took turns doing some revving to compare the volume of the dual MS and the corksport. The corksport was a little louder. We both have had the exhausts installed for a few months and both felt ours mellowed a bit after having some miles on them.
#72
Originally Posted by 4 years to Supercharge
Last night I helped a local member install the RX7store resonated midpipe.
He has the Corksport (what Mazdaspeed copied for the latest exhaust). Wow does it rip. Sounds nice, really nice. He'll have to take it easy around the police (he has a red car on top of that).![Rofl](https://www.rx8club.com/images/smilies/rofl.gif)
He has the Corksport (what Mazdaspeed copied for the latest exhaust). Wow does it rip. Sounds nice, really nice. He'll have to take it easy around the police (he has a red car on top of that).
![Rofl](https://www.rx8club.com/images/smilies/rofl.gif)
#73
Registered
iTrader: (4)
Originally Posted by mdw1000
alnielsen and I had our cars side by side parked a couple months back. We took turns doing some revving to compare the volume of the dual MS and the corksport. The corksport was a little louder. We both have had the exhausts installed for a few months and both felt ours mellowed a bit after having some miles on them.