i posted a few muffler related threads over the past few days, but i thought about it, and what it really comes down to is this.

what is the cheapest muffler i can get away with?

i can get a monza or a walker for 180can. both are direct bolt on,s so i can do the work myself. monza's advertise an "up to 10% increase in mileage", which i sorely need.

are there any fabricated generic solutions that might suit me? and by "suit me", i mean "will be cheaper overall than 180$can?, and improve, or at the very least, not hurt my mileage?"

 

Dynomax ultraflow, they are pretty cheap off of Summit I think and are straight thorugh and will stand up to a rotary.

 

okay, let me re-iterate my qwestion.

i did a search, and aparently monza is so excessivly lame that i have decided to not buy it.

what i'm thinking now is an apex'i N1 or equivilant straight through muffler.. like this one.

i have all three cats still, with no intention to take them out... will this be too noisy?

 

http://www.dynomax.com/ultrafloss.stm this one?? but its fibregalss inside! wont that blow out?

 

You could always buy one of the ones off of ebay for 49.99, I think V8klir had one of the DTM ones on his car.

 

Says it withstands temps up to 1500F don't know...

 

I got a universal one off ebay, it was $65. Full stainless, 2.5'' inlet, 3.5'' outlet, removable silencer. With silencer in, it quiets down the exuast quite a bit, with it out, it's loud, but I also don't have any cats or a presilencer. I've been using it for a year now, still works just as good as the day I put it on, packing won't get destroyed or blown out or anything. The site that sells it is www.meganracing.com but if you can find their stuff on ebay it's cheaper.

 

im using the "race muffler" listed at the bottom of the list on this page...

http://www.marcor-genie.com/mufflers.htm

I got it 3 years before i did the RB Headers and removed the cats. When it was the stock system with just that muffler and the "catback" i had made at a local perf. shop., that muffler gave a little noticable boost in power and had a nice mellow sound that was only a little bit louder than stock. They sell for around $169CDN but that doesnt include the tip. The best part is .... that muffler has been on my car for nearly 5 years now and its still good as new, minus the weathered look on the outside ... it even handles the big fireballs being sent through it daily.

 

would you say its louder than stock? can people hear you coming... from inside their house when you're a block away?

my muffler has a hole in it, and it's that loud. i dont want to buy a muffler thats not quieter...

part # 094814?

 

www.midas.com
well you did say cheap here it is

 

It is louder than stock, but with the silencer in, I don't think it's very much louder. I don't have much of an idea how loud it would be on your car, since I never had it on there before I gutted my cats. Even with the gutted cats, people still can't hear me from a block away, but you can hear it(quietly)at idle from inside my house when it's in the driveway.

 

I have a $29.99 Canadian tire muffler on my '79... been on there for 2 years... no problems as of yet, hasn't gotten louder or anything... not saying anything about the flow factor though...

 

this is what i have and it has yet to burn out... but its loud!!!!
http://www.dynomax.com/ultrafloweld.stm

 

You'll have a tough time picking up much HP if you are leaving those stock Cat's in place - that's were most of the restriction is. IMO, when comparing performance mufflers to the stock unit, I don't think there's that much difference (unless you're talking a straight thru - LOUD)

 

well, the cats are staying in for now... so i can pass aircare for starters. and also because i cant afford a cat replacement pipe. in fact, i cant even afford a muffler, but i suspeci ill need one to get my car to pass aircare.

 

Here's a .wav of the muffler I'm using. The quality sucks, since all I have to record it with is my mp3 player. It starts at idle, revs to 7k, lots of backfires when revs going down, then a slow rev to 5k.

http://coldy13.tripod.com/RX-7_Exhaust.WAV

 

man, that sounds EXACTLY like my car with a straight exhaust from the stock manifold, then to an '81 Honda Accord presilencer, and a Canadian Tire muffler!

 

http://www.geocities.com/sevensportrx7/exhaust <-- that page says a rotary's exaust can get up to 2000F at full throttle.

mind you, i dont' drive at full throttle all that much... but I do drive it al full throttle sometimes.

 

I have a stone racing OBX B5 knock off. I bought it off ebay for $50 and had the old muffler cut off and had it welded on. I have the stock manifold and cats and from all the talk I made sure it had a silencer because I had heard that it was going to be loud but it's not it sounds good. It will probably be loud when I get a RB header and presilencer.
I will be posting pictures and audio soon.

 

DO NOT GET AN APEXI N1. i had that muffler on with rb headers and presilencers and it was really really really really really loud. after a week, it sounded like i had no muffler.

 

Heres mine

http://russell.russty.net/vids/SoRRoWs%2084%20GS.mov

stock port 12A.
RB road race header
No cats. 2.5in pipes
twister racing muffler as a presilencer
Mozart DTM muffler..made by Konig

She screams when she wants

 

You just like that video clip, don't you?

 

Kinda...

I cant wait untill its done..it will be like a completely diffrent car..with the overlap sound ..muwhaah