CompuBob

I have a straight 2.5" exhaust with 2 cans on the rear, I was lent some scilencers to try out and they work great, the car is much quieter.. but I'm just wondering if there are any other tricks I can do to make it even more quieter?
I was told wrapping the tube part of the scilencer in steel wool then putting them back in the exhaust would have a big effect.. but is this true?
i dont really care about performance right now.. it's N/A I just want to have a quite car for a while..

jeyjey

have some resinators put in

Madrx7racer

ummmmmmmmm.......put the stock header back on.......I assume it's an NA cuz no one bitches about turbo's cuz they aren't THAT loud.

silverFC

stock exhaust

jn2k108

what if you dont have a stock exhaust?

37FC3S

You could use two Supertrapp muflers which you can vary the amount of discs to tune the noise/back presure. I have them on my NA and it is pretty quiet. The longer they are, the quieter they will be (mine are 16.5 inches). I have the stock manifold and a Bonez highflow cat so, it might still be loud with your setup.

Jager

iTrader: (10)

Borla XR-1 or two cats (other another type of muffler).

flying taco

Weld some muffler inline as a presilencer, kinda like the RB presilencer

Madrx7racer

i grew out of "look at me i have a loud fast car" attention ***** phase.....but there are times that I miss My loud setup instead of the RB setup I have now.

vincepru

i like the sound of an rx-7 loud, almost as much as a loud subaru wrx!

Madrx7racer

me too............but it attract too much UNWANTED attention.......cops will give you tickets if you're caught at the wrong time ( 7K shift) and ricer thugs will want to steal your car because it sounds like the videos, or the Initial D, or the D1 drift cars.........I feel that i have saved myself from having to deal woth these issues by getting a highperformance QUIET exhaust (3" Racing Beat Turbo-back)

bingoboy

bigger mufflers will help too. the muffler is a metal box filled with sound absorbing materials. if its a tiny thing that's barely bigger than your piping, it's not gonna do anything. this is why borla/racingbeat exhaust muffles well. compared to the typical fart can exhausts, the mufflers are hugemongous.

v6_rx7

install a glasspack backwards somewhere inline before your y pipe, i did it on a corvette and it cut the sound in half. pm me dude i need to talk to you

jono20

first you have to decide whether you want performance, or a quiet car. you stuff stuff as much **** as you want into your exhaust piping, but everything you do youre going to lose power.

sectachrome

v8s are a little different than rotaries...glasspacks cant take the heat.

RETed

That's a real dumb thing to do on a rotary motor.


-Ted

Syonyk

The best solution would be to sell your loud exhaust to someone in one of the threads asking "OMG HOW CAN I MAKE MY RX7 LOWDER?", and use the profits to buy something nice.

The Racing Beat presilencer helps a good deal. It's basically a rotary-resistant glass pack (with steel wool instead of fiberglass - fiberglass melts). It sits in where the cats would normally go, and helps quiet the pulses without reducing flow much (it's a straight through pipe with holes in it).

NAs are just hard to quiet down. Also make sure you don't have any exhaust leaks - they'll get your attention.

Unfortunately, there's only one really good solution to your problem, and that's to add an exhaust pulse dampener, also known as a turbo. ;-) Or so the excuse goes...

-=Russ=-

MattMan002

i have a 3inch on the down off the headers after the resonator is 2.5 then 2 1/4 its weird eventually that 2 1/4 will be 2.5 but any ways i have 2cans on the back with a 18inch racing resonator and mine is pretty quiet but still noticible and thats how i want it.....if i put the silencers in u dont hear it at all....i suggest a resonator bout 18inches or 16inches....