94touring

I'm starting to get tired of the loudness of the apexi dual tip. The performance is great but with a midpipe, even with the silencers in its starting to get to me. I'm about 90% sure i'm going to go with the racing beat dual tip. After researching, it seems like the hp loss will not be much, which is a concern I have. I know that with my silencers in compared to out, there is a huge hp difference. If anyone has some good feedback about downpipe, midpipe, single turbo configurations along with the racing beat dual tip, please comment on performance/sound.

jspecracer7

Horsepower loss? If you run with silencers, you're losing flow right there. I think that you'll be Happy with the Racing beat dual tip. Good sound and performance

94touring

Exactly, I don't want something so loud I need silencers to drive around on the street. Does anybody know what the differences between the m2 dual tip and the rb dual tip are? Tip sizes?

spooledUP7

If you are going to think about the M2, call them first and make sure they have them in stock. I'll have to measure the tip size for you later.

94touring

Anyone?

boostedrotor

i've been running a tanabe racing medallion....i've never seen another on a 7 but they sound good and not to loud, until you dump it, then i really don't think it matters what you have it will be loud, but i have a mp and a dp so maybe that's why it's so loud, but i personally like to hear it.....but if i had to drive it daily i'm sure it would become annoying

Jason

iTrader: (5)

I have a bunch of M2 dual tips in stock if anyone needs one.

Jason
www.rx7store.net

Import Convert

I personally think the RB exhaust sounds nasty. I heard it on a car at the dragstrip. No tone at idle and raspy as hell at WOT. I am liking my N1 single, but I have no midpipe yet. If I were to buy a different one I would check out GReddy or Tanabe.

94touring

Thats part of the reason why I wanted to know the difference. I saw that you have the m2 in stock, and my plans are to buy the new exhaust asap.....so if the m2 is basically the same as the RB, i'll order from you today.

JONSKI

I'd like to see someone do dual stock exhausts. Quiet as far as engine noise, but still have a loud turbo whine.

SanJoRX7

The M2 and RB are NOT identical, but they are pretty close by most accounts. I've read that the M2 is slightly inferior in terms of construction and fitment. I've heard them both and they're pretty close. I'd say that the M2 has a slightly more agressive tone.

MakoDHardie

You ever think about going to a hi-flow cat set up instead of looking for a different exhaust set up for sound reasons. I'd think that the canniste style exhausts would keep better sound quality with a dp and mp installed. The muffler style would probably be sloppy with that much free flow before the muffler. If you're concerned with conserving horsepower, I'd think about going to a good high flowing cannister style exhaust matched with a high flowing cat. That way you'll be able to reduce the sound and you can still have 96% flow of an open pipe on the cat while making more on the exhaust end with a good race style pipe. Look at the N1 style pipes: A'PEXi, Kakimoto, JIC, HKS, GReddy, Rotary Performance, etc. I'd imagine that you'll get the same power yield with better sound quality with one of those systems hooked on a cat. They flow better than muffler style exhausts and the cat will reduce sound enough to be tolerable while keeping good flow. And then you'll still have the silencer for the exhaust.

Stevil

I have just put my mp on. I also have the N1 duals and I havent been able to drive it yet, but Idle was pretty loud.
I had a Bonez HF cat. had it for less than 8k miles. Chuck(rotary extreme) commented on my car not being too loud w/ dp/ hf/duals. This was the day of my dyno. I dyno'd and hit just 276hp when I was sure to hit 300+(due to mods). So, when I take my HF cat off, I stick one end up to the sun and look thru the other and see blackness. Vice versa same thing. Seems to be a clogged hf cat that is suppose to resist rotary exhaust temps. Hmmm.

Also, to stay on topic, I was thinking of going for this setup www.powertone.com. Looks pretty cool.

Steve

meddle

I have racing beat dual wiht a dp mp and it is fairly quiet in around town situations. It really rumbles at idle and below3 grand. like some one mentioned above it wails when you punch it. quiter than some other fds i have heard for sure. sound isnt an issue to me thouhg, i got it mainly for the sleeper look.

ptrhahn

iTrader: (9)

This would be HEAVY as hell... whats the stock catback? 60-70 lbs?

My PFS is like 1-19 lbs... prob flows as well as three stockers.

Mikey

my thermal is awesome. it is such a deep sound. there is no "rasp" at all. i will never ever buy another brand but thermal. btw, i'm running with a downpipe and midpipe....and it still sounds great.

agent712

I'm going to get a Racing Beat.

http://racingbeat.com/FRmazda3.htm

Its a nice straight through system that is quiet and performs well I've heard. And I like the look of it. Not too big. I'm not much for dual tips.

Nick

94touring

I have considered going with a high flow cat, I know that it would make the n1 duals much quieter, however I would prefer to go with a different tone. I'm not a big fan of single tip exhaust and so the only options I really have is the rb and m2. If the m2 has a good tone and is fairly quite below 4k rpms, i'll be happy. I know that the m2 will be louder than normal since i'm retaining the midpipe, if it is unbearable loud then i'll go with a high flow cat along with the m2.

RxRacer-X

Ive got the Apxi N1 single with greddy dowpie and resonated nid pipe and i love the sound it makes. It purrs on the bottom end and screams on top. The silencer is removed, when i had it dyno'd with the silencer in it was 12 HP less!

$150FC

kinda offtopic, but how does the exhaust work with the sequentials? Two downpipes, one per turbo? Or does the "rats nest" allow one pipe?

94touring

Changing the stock turbos to non-seq. or seq. has no effect on exhaust. The only thing you are doing is modifying how the turbos work in conjuction with various actuators, solonoids, hoses, ect..... Let me also point out that if you were to change to a different turbo, such as a single turbo, then you would no be able to use the stock downpipe specs. It would have to be designed to fit into the new turbo position.

$150FC

...Right, right, I knew that
By "sequentials" i just meant both stock turbochargers.
I mean, for example, in a stock FD, you have two turbos, obviously. I've never seen under the hood of an FD in person, so I might be neglecting something stupidly obvious to you guys, but if you have two turbos then you have two downpipes, right? One from each turbo.
I always assumed that it's a Y-pipe-looking thing from each turbo to a single pipe, since FDs have single exhaust.
Hopefully I've made myself more clear now.

Tom93R1

iTrader: (2)

The turbos are back to back on the exhaust end and the manifold connecting them has pretty much one outlet. Thus the need for only one downpipe.

94touring

150fc,

Take a look at this pic of the stock twins, you'll see that there are two turbos on each end and the exhaust outlet is kind of in the center.