I was doing a little research on mufflers and I found a new product (new to me at least)

Made by Flowmaster they are called "HUSHPOWER II" ther are stainless steel and they look like the right size for the FB.

I am thinking about doing RB header, Hushpower II, and the big flowmaster at the *** end.....

Since the flowmasters are fully stainless i dont think heat will be a problem???

Any thoughts....

And the flushmounts are comming

Jason

 

Regular flowmasters are internally baffeled alluminum and do not stand up to the rotary heat. they will last 6 months tops then sound like there is a handfull of change in the exhaust. If you like that sound continue on. Just get a magnaflow or borla and do it right the first time. You can search "flowmaster" andsee all the negitive responses besides mine. Oh and ask me how I know they suck.

 

According to the site the HushpowerII is 100% Stainless steel.....

Could they have changed?

J

 

In my humble opinion flowmasters are over rated and too damn loud. Magnaflow puts out a better muffler and is quieter. But there is NO substitute for the Rb pre-silencer for quietness and durability.

 

IMO, flowmasters are absolute CRAP! Definately overrated and they don't actually flow as well as they say they do. As for the hushpower, I think they were made more for racers that race at tracks with a dB limit, but still not nearly effective enough for a rotary most likely. As stated before, stick with Magnaflow or Borla. they've both been proven to withstand the rotary heat and they make a nice sound too.

 

they don't give enough information about the internal construction to know if it's worth your money. If it's just a normal resognator and is 100% stainless but has fiberglass pack the glss will still burn out. You can't make assumptions. Just do it right the first time and save money in the long run...

 

Flowmasters on a rotary a big big waste of money.. My boy Geo put them on, after we told him continuously not too and in a matter of weeks we could hear him coming from blocks away & he got some nice tickets to go with noise & the price of the burned out muffler ha ha & and had to go buy a used Racing Beat muffler from another friend who wouldnt just give it up. That RB muffler outlasted his car. Moral leave piston mufflers with the pistons we respond to a higher god lol

 

Jason you're not the only one, we've been looking at the Hushpower type Flowmaster stuff also, for my son's SE. Why? They are stainless packed, stainless perforated tube, stainless shell mufflers. The Rotary can't burn them suckers out. They also have the double shell design to reduce surface temps and radiated heat. And another thing all you nay sayers, they are one of the quietest designs Flowmasters makes. They put out a deep mellow tone, perfect for taiming the Rotary sound.

I'm thinking RB header, followed by a Hushpower resonator and then a Hushpower muffler all connected with stainless. It should form a nice sounding, high flowing, long lasting, reasonably priced exhaust for the RX7.

Right now we're tied up with installing some 16x7 BBS rims off of a Volvo S40 and fixing up the oil system (cooler and OMP). After that we'll build that exact exhaust system. That is unless you do it first and come back with some poor results. But based on my reasearch it will work great. I agree with the other guys about the standard Flowmaster muffler, avoid that and go with the Hushpower resonator I suggested.

Vernon

 

it really is a matter of the design, not the name. if it is like NewRXr says, then it should be fine, if the quality is good. but all you need is ss packed with a straight through design, and an ss body, the rest is just details.

 

What's with all the flowmaster hating? A lot of people say they're no good on rotaries, but how many are speaking from personal experience?
I have a flowmaster 60 series on my car. It's right around 3 years old, and it sounds great. Noot obnoxiously loud, hasn't melted down yet, and it breathes good. Compared to some of the others I've seen/ heard, I think it's a good muffler. A little spendy, but worth it in my eyes.

 

i hope everyone can appreciate what bstrange99 said, and not just continue passing on false information.. what model are you using?

 

I'm really interested in hearing a setup with these new HUSHMASTERS.

 

They sound great on a V8

 

I ran a 40 series on my first na 12a fb and it lasted about a month before it rattled itself apart inside...

Where did you get this info it's not listed on Flowmasters website. If that's what the hushpuppies are then the might be okay.

 

Hushpuppies-LOL
I run a garage, well I work there too. There's an exhaust shop real close that we send alignments and exhaust stuff and they send us the technical repairs. So we give each other good deals on our own vehicles. They're big into Flowmaster so when I was trying to figure out something for the RX7 I recalled reading a blurb in Hot Rod/Car Craft about the Hushpowers that looked promising. When I had some time to kill at thier shop I looked through the Flowmaster Catalog for information. It was either from that or a magazine article/ad. Probably both. Basically it's a Flowmaster product but it's a different design than thier usual stuff, more like a Borla, but with a longer smaller insulated case. The size, shape, construction, and sound qualitys all pointed to a good choice for the RX7.

I just went to Flowmaster's website and the link about them is on the home page. I was a little off, they are all stainless but it's not a wool packed design like I was thinking or it is in the tail cone. Either I confused that with Magnaflow which I know is or they have this also:
Hushpower II™


Jet Laminar Technology
Hushpower II mufflers utilize multiple layers of flow directors that work much like a jet engine by compressing the gases and increasing the velocity of gases as its entering the sound chamber. By using the laminar jet gas flow technology, sound frequencies are blended upon entering the sound chamber canceling out high frequencies as they exit creating a deep mellow tone that is pleasing to the ear.



Cool Shell Technology
Utilizing the latest in space age technology, the Hushpower II features "Cool Shell" technology for improved heat control. By insulating the outside of the sound chamber with a high temp ceramic heat blanket, it retains the heat inside the case increasing exhaust velocity for improved scavenging and lower exterior case temperatures



Vernon

 

Stainless muffler on non turbo=crap. I blew out a stainless muffler within two weeks behind a 13b bridgeport.

 

then what do you suggest? a non stainless? that sounds ludicrous.

 

We suggest a Magnaflow or a Borla.... Ughhhhhh on another note no matter how good the muffler or resognator one good backfire in the echaust can kill it. Not the friendly flames out the tail we all love bit a big bang. it's happened to me. Kinda funny after words though.

 

i was under the impression he was saying that a ss magnaflow would be bad, not a chambered muffler, my misunderstanding. yea, i definatley woudlnt use a chambered muffler, but thats just me.