my flowmaster has held up better than most other catbacks i have seen. I have seen some really rusted hookers out there though. I love the thing, noticeable more power. No aftermarket catback is going to have 0 gains. Everything you buy will get you more, guaranteed. Robbie may have gotten this info with varied track conditions, driver response, etc.

 

I'm running the bullet myself but just a single pipe out, no dual exhaust

 

LOL! What?! I've sold both these systems for a living. Magnaflows don't have any "c-shaped channel". It's a stright-through muffler.

I read every post in this silly thread because it's sometimes funny to see some of the misconceptions people throw around about stuff like this. The truth is, Flowmaster mufflers flow marginally better than stock, but are some of the worst flowing mufflers in the aftermarket, right up there with Spintech. I've sold most aftermarket systems for a living and know what their good and bad points are right from the horse's mouth. When you sell this stuff wholesale you get to know the reps real well and get a chance to get inside their heads for some real insight. I've also seen the flow numbers on most aftermarket mufflers. Among street mufflers the worst flowing are Flowmaster and Spintech. Among the best are Magnaflow, Borla, and the Dynomax Ultra-flow. If you don't believe me check out the December issue of 5.0 Magazine. They did a 15 muffler shootout. Guess which mufflers made the least power and the most power.

-Chris

 

People should quit mentioning Mustang Mufflers they are not crossflows and are no where near the same.

And yes the new Magnaflow systems have c shaped baffles to direct more of an even exhaust flow. Call them and ask!

 

You're right, the Flowmaster crossflows flow even worse than the standard 40 series, so the difference in flow is even worse than in a standard muffler as used on the Mustangs. Thanks.

As far as the "c-shaped baffles" are concerned I used to sell Magnaflow exhaust and I have no idea what you are trying to refer to. Maybe you can try to clarify since you aren't making any sense.

-Chris

 

Cody, perhaps you can point out the non-existant "c-shaped baffles" here: http://www.magnaflow.com/wideopen.htm

-Chris

 

I held a Magnaflow muffler in my hands and looked, And if you aren't going to call Mangnaflow for yourself don't flame.

And you really are smart aren't you, that's a real neat crossflow!

Look at a crossflow next time because I know what I am talking about!

 

i can only say what i have found from my personal experience. i ran open straight pipe on my 65 Chevelle and ran pretty consistant 14.8s at the track. when i put my flows on (2 40 series two chamber) i ran a 14.4 first time out. i have nothing but positive things to say about them. not to mention how many thousands of pro's use them in the drag racing world.

as far as the people saying that these damn magnaflows/dynamax "mufflers" are better flowing. why the hell are you comparing a freaking GLASSPACK to a actual muffler?? thats basically what those "mufflers" you people are talking about are, glasspacks w/o the insolation. you might as well put a damn piece of straight pipe on the car! SO STOP COMPARING THEM! the conversation is stupid! you're comparing two different things.

and YES! crossflow mufflers are different too. and they are generally not as good as a regular muffler.




jon

 

Finally, Someone else sees what I am saying.

 

If you saw some kind of "c-shaped channel" then you weren't holding a Magnaflow. Some comapnies use baffles, though, which is what you may be unsuccesfully trying to refer to. Gibson and Bullydog have baffles, as well as Thrush's Glasspack.

You still don't understand, do you? I SOLD MAGNAFLOW FOR A LIVING. I don't have to call them. I sat in on sales meetings with the sales rep who brought in several different mufflers. You may have held one, but I've held every style of muffler in their line. Again, I challenge you to show me a picture or point out on the link I provided where these nonexistant channels are.


Yes I am smart, thank you. I am also exceptionally informed. Obviously you aren't because you aren't making any sense. Flowmaster crossflows flow worse than other companies' do. In comparison to standard mufflers the difference is even more dramatic. What don't you understand about that? You're trying to play some stupid little somantic game by bringing out the term "Glasspack" which is a specific muffler made by a specific company. You're upset because we're comparing two different styles of mufflers. Saying that comparing a straight-through muffler to a baffled muffler is like crying because a K&N filter flows better than a paper filter and you think it's an unfair comparison. Regardless of how it muffles the sound it's still a muffler, it's still street legal, and it can even be quieter. Borla turbo mufflers are quieter than a 40 series and they flow far better, too. A perfect example, my '64 Chevy II with 2.25" exhaust and Borla turbos is quieter than my dad's '74 'Vette with 2" and 40 series. In addition, my Borla mufflers have a million mile warranty and will last longer than the car they're on, while my dad's Flowmasters have a 0-mile warranty and will have to be replaced in time.

COMNBYU, I'm sure that your runs were made on the same day under the same conditions with no other changes whatsoever to the setup on your '65 if you're making such claims. And no, a Magnaflow or Borla muffler is not a Glasspack. A Glasspack is the only thing that is a Glasspack. Glasspack is a brand of muffler made by Thrush (Dynomax). Borla and Magnaflows flow even better and provide better sound dampening, as well. In addition, not only do they have insolation, they have a lot more of it. Nowadays most companies use stainless steel rather than fiberglass packing (the "Glass" in "Glasspack"), which tends to blow out and/or deteriorate over time and lose it's sound deadening capabilites.

Here's an interesting bit of trivia. The first Flowmasters were made out of hacked up garbage cans,and the basic design hasn't changed since. That's some real "exhaust technology" from the "exhaust technology company" for you.

-Chris

 

COMNBYU the reason you picked up 4/10s is called back pressure! The ultraflow bullets are not glasspacks they are racing mufflers. A muffler is something in the exhaust that quiets it(muffles the sound). Sure a resonator or cat will do the same. I have ran them on cars and they quiet the exhaust, which is what they are made to do. Obviously they flow alot better than standard mufflers, thats what they are designed for. As far as just replacing them with a straight pipe, probally wouldn't make much difference in flow, but straightpipes would be louder. And a glasspack is a muffler, its just got a different name!

 

Technically, a glass pack is a kind of resonator, not a muffler. There is a big difference between a resonator and a muffler.

 

CALL MAGNAFLOW AND ASK, IF YOU AREN'T GOING TO CALL OR ATLEAST LOOK AT THERE WEB SITE (CROSSFLOW DIRECTOR) QUIT POSTING.

I AM NOT A NEWBIE NOR DO I LACK KNOWLEDGE OF WHAT I WAS LOOKING AT. UNLESS MAGNAFLOW PART # 12266 AND 12265 ISN'T MADE BY MAGNAFLOW I AM RIGHT.

I KNOW WHAT I AM TALKING ABOUT YOU DON'T!

CALL HERE AND ASK THEM TO TELL YOU WHAT THEY SEE

1-888-413-7767 IT IS HUSKER PERFORMANCE EXHAUST IN LINCOLN, NE. THEY JUST HAPPEN TO CARRY THE 12266 AND 12265

 

I think it's funny as hell they're pushing your buttons since you're so fricken irritated about a dumbazz muffler....

 

Nope, you're wrong, so you might as well quit posting and making yourself look stupid. You don't seem to understand, do you, genius. I sold the stuff for a living. You holding something in your hand once a long time ago that somebody told you was a Magnaflow muffler means nothing compared to the fact that I sold the stuff, had sales training on the stuff, and perused the stuff firsthand at length. You make yourself look even more ridiculous with every post.

As far as looking at their website, I have and even posted a link, but you still haven't shown me thier little baffles you keep referring to as I asked you to several posts ago.

If you want proof go down to your local muffler shop. Most of them distribute the Magnaflow line and will be happy to show you your ignorance. Want further proof? Watch TNN on Saturday or Sunday morning. Magnaflow pays for some serious airtime. During their commercials they show an end-view of a muffler. Guess what? No little baffles.

End of story. End of argument. If you have any more stupid arguments to make take it to Email and quit wasting the bandwidth on this site and it's members' time by posting incorrect information.

-Chris