You guys are going to call me a ricer, but I don't give a ****. I just had the Bomz EVO mufflers I bought off of Ebay installed. $150 for the install... adapting the 2 1/4" to 2 1/2" and welding them on. Stainless to aluminized steel is hard to weld but not impossible is what the shop stated to me.

I like them because I can set them loud for ****** around with my friends, or turn the baffles closed to make it a little more tame (too avoid attention, what a concept!). I haven't even removed the baffles entirely, I can't imagine how much louder it would be.

The mufflers I had were N1 copies but they had the inlet at the top portion of end of the canistor and the oulet in the middle or at the bottom. It must have been a baffled muffler, but looks like a glass packed one. All I'm saying is these EVO mufflers look cool, are well constructed, dont blow fluff out the back and are reasonable, well... too good of a deal to pass up.

I even made a little vid if you guys want to see it I can post it tomorrow.
-Bobby

 

By all mean post the vid.

BTW that welding will begin to rust soon.

 

Single.. double is just heavy extra crap on a turbo car. Go single.

 

Here is that video because 1987RX7Guy wanted it!! http://bobbys_vws.tripod.com/rx7/BobbysEVOmufflers.avi *right click, save target as..*

The clip got cut a little short (camera only does 30 sec clips), but I will try to get some inside and outside videos edited this weekend. It sounds much better in person than on the clip and even better in the car. I will check at night to see if I can see any flames (hear sputtering and am still trying to do the 'feather throttle around 7K RPMS, makes it run rich/lean').

Here is one with the stock (well, N1) style mufflers doing cookies in a parking lot : http://bobbys_vws.tripod.com/rx7/parkinglot.avi

Enjoy! Let me know what you think...
=Bobby

P.s. re: welding. Yeah thats what I figured also. I do a little mig welding myself but have never tries to weld SS. I expressed this to 'the man" and he said not to worry (mentioning the dis-simular metals and electrolosis). He gave me a 3 year warrenty against his welds breaking (not the mufflers) and I will wire brush the welds and paint them with an zinc rich primer and high temp paint. What do you think? (can't powdercoat either).

 

Depending on mufflers, dual 2.5" mufflers adds ~20lb compared to a single 3", or less than 1% of the car's weight. If you think you're actually going to notice that difference, you're dreaming...

 

having dual exhaust is ricey, single is the only way to go.

 

Yo,

Dude, try not to burn your computer desk when you put that crack pipe down.

Factory dual exhaust is ricey? Yeaaahh...

If anything, /single/ is way more ricey that the duals since it makes the FC sound like every other fartcan equipped Civic out there.

Fogetaboutit.

Kevin
1989 GTUs "Brraaaaaap...no thanks."

 

Hey Erik, clean car!! and nice looking paint job.

 

Seriously?

the RB duals do look like a Midas custom setup... not so cool these days.

the BEST lookin single, is like mine... i think the RX7 is too sophisitcated to have a HUGE *** can mounted on an angle and hanging halfway out the back.

you should all strive to have something like this:

That flange was cut off from the Precat 2. The cat you see it bolted to is Precat 1, right off the manifold, and its gutted. the exhaust you see welded to it is 60mm aluminized, inside and out. it cost me $28 for a 10' stick of it.

Thats how straight of a shot it is from the initial 20* bent coming off the Precat, all the way to the rear subframe.

See how its tucked up under the car and w/ a few 30* bends, its not all rice-ified all hanging down and halfway past the bumper. its tucked up nice and clean. I honestly dont like how the shop put those last 2 bends in it. i actually wanted to mitre the first bend, and drop down the front side of the muffler, so i can eliminate the 2nd bend as it enters the muffler. that would angle it, but still have ground clearance and still be tucked up under the car.

and this new exhaust is like 30lbs lighter than the origiginal peice of **** that i took off for several reasons:

-Original Piping is 2 layer, has integrated outer heat shield
-Original Precats are ~10lbs each, only 3-4lbs gutted
-Original Main cat ~15-20lbs each
-Original exhaust has 2-bolt flanges on mufflers
-Original exhaust has More hangers than custom
-Original mufflers have many metal baffles welded inside
-Original mufflers are two, custom exhaust is ONE muffler
-Original exhaust has Air Injection tubing/actuator for Main cat.
-Original exhaust requires heat sheilds over mufflers: extra baffels retain extra heat. No baffels retain little heat.

the weight you can save over going w/ a large single is worth the trouble. I dont know how many times ive said it before, but the nickle and dime bullshit weightsavings that you idiots Laugh at, is what got my car down to a ~2500 curb weight with full interior.. so STFU w/ your negatory comments about negligible amounts of weight savings.

 

Need I say more?



Honestly, I wanted a single setup for a while, but the looks and sound of the dual over what a single wouldve been like outdid any weight savings that I would have gotten. Call it rice, whatever. I want my car to look good.

 

the sound of a rotary w/ cats sounds like ****.

i would take the sound of my Single any day. when you have cats, it sounds... i dunno, choked. i want to hear each Brap... you know?

the onlything missing from my exhaust is a Header.

but, Gee, your mufflers sure are cute.

 

Brap


Try listening to the BRAPs in Stereo biotch!

 

So you want to look like those honda idiots with bodykits for dual exhaust and they only have one.

Duals sound much better than the chainsaw effect that you get with a single. Duals also have a purpose making them NOT rice.

 

in stereo makes it more quiet... BITCH.

you have half the flow thru each muffler, which means it goes half the velocity, which means that the packing in the mufflers can do twice the job of quieting the exhaust as before... so put that in yoru Dual mufflers and smoke it.

try listening to a Brap-Brap thru a single 60mm race pipe, gutted cat, and Arospeed muffler w/ NO packing/sound deadening... My Brap carries across town at night, you can hear me from miles away. My gf could tell when i was coming home and 5 minutes later, id pull into the parking lot... so, i suggest you reckanize.

 

Who let andretti in? You actually want your car to incredibly loud? Sounds like a rice boy to me.
I don't give a **** about breaking windows with my exhaust note. Or making honda's sound like normal cars. I have to actually enjoy the ride not get out looking for paper towels to clean my blood off the side of my face after I pop my ear drumbs.


I will not ReCaNiZ e anything RICE BOY.

Santiago

 

ok E-thug, whtever you say . The best exhaust on a Rotary is the one the FLOWS THE MOST. the one that FLOWS the most is the one w/o the Least baffels, and the least changes in pipe diameter, the least deviations and splits in the pipe.

that basically describes my exhaust. when you take a single and split it into dual, that creates extra turbulence right at the Y in the pipe... you know what extra turbulence does? It slows the velocity of the gasses... you know what that does? it creates more backpressure... you know what that does? that costs you ****** horsepower genious.

the ONLY LEGITIMATE dual exhaust is a TRUE dual. a Dual exhaust on a V8 that has a single cat is a Poser exhaust, for pussies. you aint got a dual exhaust unless its dual from the ENGINE back... and the only one that can pull taht off is the RB.

and i dont think you have an RB...so your exhaust is ..

you dont hafta recanize anything you dont want to... but youre still wrong.

Uhm, i was here before you even knew what a rotary was... if you check the first few pages, im one of the original posters... So, you need to learn a few things... n00b13.

 

for me its a performance factor( weight, power) not all looks so I'd have to say single.

 

what duals serve? more weight, less flow? single with 3.5in tubing is the only way to go, take one pipe out the right hand side with a flow master can in there somewere, thats a good way, better flow.

 

Ok buddy, You need to know who your talking to. I OWN a ******* TRUE DUAL EXHAUST BUSTER this is why I don't like a single unless its a turbo. The cork sport exhaust sounds like *** the RB mufflers on the other hand don't The mazdatrix true duals sound way better than the CS cat-back and all the N1 copy cans.
I might be newer than you but you being here longer means nothing other than you found this website before me. Just like post count a sign up date means nothing. You need to learn to deal with the fact that a loud exhaust is not good on the street. Oh and to have a single exhaust you have to have a collector which would probably cause the same **** as a Y-pipe unless its done well. True Duals have power in all RPM ranges not just one like a tuned collected. I have delt with this **** before and WE have yet to see any proof of the tuned exhaust's superiority in HP. I sure as hell havent seen any damn numbers or times from a N/a car with the two different exhausts.

 

"Best" is such a reliative term. You like your because it flows the most, so you think its the best. Thats fine. Ive had an exhaust that was very high-flowing, but also very loud. You may like the "brap", but I dont. It was entirely too loud for me. Now my exhaust is quiet, has a nice mellow deep tone, and sound great. Just realize that there is a purpose for a collected dual system. It can take advantage of the scavenging effect, while still giving you a fairly mellow exhaust note. True duals are great for a stock port N/A, but with a street port they will not be the best thing. And a collected single weighs the least, but will also be the loudest. Each system has their distinct advantages and disadvantages. You say that you dont have a header now, well wait until you do and see if you still like your exhaust sound. My bet is that you wont.

 

You're obviously an expert. Have you read any of my posts in this thread? I go into quite some detail about why what you have said is wrong.
Who are you to say what's "legitimate"? There are proven engineering reasons for using an exhaust that splits to two mufflers, which is why many manufacturers do it. There's no posing in it.

Pussies? Jeez, grow up...
Any decent exhaust builder could build something identical. RB certainly weren't the first.
Can't you make your point without resorting to stupid insults? You've already broken forums rules several times, and only come off looking like an immature kid with more attitude than knowledge. If you can't act like an adult, go play elsewhere.

 

The Y in this is smoooooooth.

 

yea, that exhaust is cute.

In case you cant tell, im a sarcastic sonofabitch.. so calm the **** down NZ. i dont want to hear your bullshit.

I know a true dual doesnt have to be specifically a Racing Beat. The reason OEM's use a single and split to a Dual is because its cheaper and easier and also lowers emissions... not for a performance aspect. if splitting froma single to a dual is helpful for performance, then why the **** didnt they do it back in the 60's on the muscle cars?

oh, and i read your other posts, Mister-i-think-so-highly-of-myself-and-everyone-should-listen-to-me. I agreed w/ alot of them, if not all. you brought up valid points. but since your bashing me and have no concept of sarcasm, im not about to tolerate any BS. so chill the **** out and crack a beer. stop taking **** so seriously.

if you disagree w/ me, you are wrong.

 

Sounds like I hit a raw nerve...

If you don't want to be "bashed" then don't bash other people. If you can't make a single mature post, don't bother.