maxvol

iTrader: (2)

Hi I just purchased a RB header and Im considering how to make my exhaust, I dont care about a cat, but I want my rx to be as quiet as I can make it I was thinking or a pre silancer but what about using 2 mufflers like some high flow ones will this make my car quieter then lets say no cat but a straight pipe to muffler.

Or will a pre silancer work just as good and then run a straight pipe back to muffler let me know what you think I did some searching but you all know that it gets more garbage in the results then what you were looking for.

Thanks for the ideas...

MattG

iTrader: (2)

If you want quiet, you better get some pre-silencers and a RB muffler!

Lee Lyons

if you want quiet you had better buy another car...lol...noise is the nature of the beast

kgray

mine's not too loud and it's a muffler, drilled out cat and stock muffler. cheap and works well.

maxvol

iTrader: (2)

Ok im not looking to have a very quiet car cause im living with an exhaust leak right now from the original header to the pipe that has the cat on it there is a hole so its not quiet and the previous owner put a reactive muffler on it .

"mine's not too loud and it's a muffler, drilled out cat and stock muffler. cheap and works well."

What do you mean drilled out cat like nothng there just a shell?

thanks

perfect_circle

you could go with one magnaflow as a presilencer, and another one at the rear

Paradox_Racing

The problem is making it quieter generally slows your exhaust flow, and inhibits power. I ran into the same problem, because the cops around here are dicks! I ended up with a RB header, no cats, custom exhaust, a mind train muffler blank as a presilencer, and a RB power pulse muffler. It's not TOO loud unless you get on it, but I wouldn't mind if it were a little quieter. OH WELL, that's what comes with owning a rotary, to make power, you pretty much have to make noise!

nick1

that's what i plan on doing. i just bought a road race header, i'll get
a custom 'y' pipe made, and then run one round magnaflow muffler where the main cat would go, and then another at the rear, unless i go with a fart can. it will be loud, but tolerable i hope.

aarons

can the magnaflow stand up to the heat of the rotary??

maxvol

iTrader: (2)

Yhe what mufflers will stand up to the Wankle?

EonBlue

Yes, the stainless steel wool packed ones can.

Siraniko

iTrader: (13)

rotarygod

iTrader: (1)

Just because an exhaust is quiet does not mean that it has to kill power. That is a myth. Also just because an exhaust is loud doesn't mean it flows good or makes good power. That too is a myth. For a stock to streetported engine, you can easily use a Dynomax superturbo muffler. It is plenty quiet and you will not notice any lack of power to other systems. Another myth is just because it is a straight through muffler it must flow good. Also not true. Just because it isn't straight through also doesn't mean it doesn't flow good. There is no trend.

Siraniko

iTrader: (13)

My experience with RB full exhaust is solid. Used it before I ran dual pipes into 1 muffler. Now, Im back with another RB dual presilencer and primaflo muffler. Im ready to switch back to dual 2.25 pipes since my car wont pull as hard as before. Maybe its just me but freeflow is what I prefer. I will take magnaflow over a dynomax muffler. I dont like metallic noise .

Just my $0.02.

rotarygod

iTrader: (1)

Dynomax and Magnaflow are the same company.

fcdrifter13

heres the set up i was running until it got ran over when i was gonna have it welded up.

RB header (for the true dual exhaust set up) into 2in pipes to a single mergre into a Borla XR1 I used as a pre silencer, split back into to pipes after that, into 2 N1 stlye fart cans in the rear at the stock exit pointed out and up. OMG I need to get another FB just for that exhaust note it owned at life.

blwfly

iTrader: (4)

is there decibel laws in usa and what is the max db
and how many db would a stock engine with say a rb road race extractors to a straight pipe be and maybe a muffler but will be same diamerter
lets say what wacky has 2.25" i assume itl be at least quieter than a harley davidson with modded exsaughst which is about 110db from memorey
well if itl be under the law rate tell the pig to go root in his penn
and in usa do u have to get certs (certifacation) for modds on ya cars as im new here

kgray

well my stock cat is a little different than yours (i have a 79) If you're not worried about emissions, then just use a straight pipe to a stock muffler- i dont think my cat is helping that terribly much and that wont cost you the $1XX dollars to get racing beat's system. I'm not opposed to them at all, but i'm poor and had to do something cheaper. as long as you have a welder it only costs the price of the header and 4 or so feet of pipe.
good luck

maxvol

iTrader: (2)

"well my stock cat is a little different than yours (i have a 79) If you're not worried about emissions, then just use a straight pipe to a stock muffler- i dont think my cat is helping that terribly much and that wont cost you the $1XX dollars to get racing beat's system. I'm not opposed to them at all, but i'm poor and had to do something cheaper. as long as you have a welder it only costs the price of the header and 4 or so feet of pipe.
good luck"

Ahh those wonderfull wonderfull words of being POOR LOL, Ive been saving for 5 months to buy this part. But im thinking maybe the 3' universal presilancer that they sell on RB and a megnaflow muffler with custom piping to the back. Just learned how to weld yayee..

thanks for the input. keep em comming

-max

perfect_circle

Dynomax use fiber glass, while magnaflow use stainless steel.

vxturboxv

iTrader: (2)

Factory muffler with a cheap pre silencer is just as quiet as a stock setup with the cats.

BlastinSideways12A

I run the streetport exhaust setup from Racing Beat. When I had a Weber DCOE 48, my intake noise was louder than the exhaust.

If you are going custom, run two Magnaflow mufflers, one where the stock cat would be, and one where the stock muffler would be. And go with 2.25" pipe, definately no bigger than 2.5."

I eventually plan on building a custom exhaust setup from the RB dual outlet header back to shave a few pounds and change the lengths of the collecters to optimise the engine's torque curve. I will be using a Magnaflow muffler for that.

Siraniko

iTrader: (13)

Whats your experience with that set up. Im asking as I have another complete single 2.5 exhaust with magnaflow. OK on top end but for low-end, I prefer a dual 2.25 into 1 muffler.