Mufflers again - Do I keep my Flowmasters?

[Twil]

Sorry for opening this can of worms but:

The 87 Turbo T I just purchased has dual Flowmaster Mufflers. Do I keep them or pick up a set of UlraFlows (Or another brand)???

These Flowmasters sound great - But sound doesn't win any races!

Brandon

 

[Mightysix]

I would loose the flowmasters and go with a better flowing muffler. Walker, hooker, dynomax..... I currently have hooker areo's sound good and perform good.

HTH, Mike

 

[HellOnWheels]

Which muffler has the "aerochamber" design?

HellOnWheels

 

[Mightysix]

Hooker

 

[Cheeseburger]

Whats wrong with flowmasters??
They work fine on my car!

 

[Mightysix]

In my opinion they arent the greatest flowing mufflers. Yeah they sound good but our TR's love the free flow. I have experience with flowmasters, i used them on two of my previous cars. Again, just my 2 cents...

 

[UNGN]

Originally posted by Cheeseburger
Whats wrong with flowmasters??
They work fine on my car!

you have to define "fine". It's a scientific fact that flowmasters have more backpressure than straight through designs like Ultraflows.

Backpressure reduces the work that can be performed by the turbocharger and eats horsepower. The lower the backpressure, the more HP a turbocharged motor will make.

 

[Cheeseburger]

Originally posted by UNGN
you have to define "fine". It's a scientific fact that flowmasters have more backpressure than straight through designs like Ultraflows.

Backpressure reduces the work that can be performed by the turbocharger and eats horsepower. The lower the backpressure, the more HP a turbocharged motor will make.

I have dual 3'' flowmasters on my car with the bgc 2 3/4 dual pipes and have run 129 and 130 in the 1/4 through the exhaust with a 231ci iron head motor.
So i would have to say they are working for me.

Or if i change them i will see more hp??,i am not sure if i would put money on that!

 

[Mightysix]

I definetly think you would see some gains with a less restrictive muffler. Depends on how nutty you want to get

 

[turbo nasty]

the flowmasters sre more restrictive. ATR pit bulls, hooker aerochambers, dynomax race, etc..

 

[Cheeseburger]

So where are the test results to back up the thought that flowmasters are ng,so i can have a look?

 

[Cheeseburger]

Originally posted by UNGN
It's a scientific fact that flowmasters have more backpressure than straight through designs like Ultraflows.

Who was the scientist that conducted the experiments on the various mufflers?
I would like to see the report so i can compare the different cfm ratings.

 

[RUQWKNF27]

I mean hello guys!!!!!

You want track results then go look thru a f.m. an say a dynomax welded magnum an see for yourself!! Like the guy says before the more backpressure the harder the motor an turbo has to work.. Just because you are running 129MPH doesn't mean they are good , it means take them off you will go faster. An you may ask how fast, that I am not sure just know they are holding you back, an common sense will tell you that.. These posts are right up there with power plates... I had a car an chenged them out to straight pipes an touched nothing else an gain 3 lbs of boost ,maybe that will tell ya something as far as a test.

 

[Cheeseburger]

Re: I mean hello guys!!!!!

Originally posted by RUQWKNF27
You want track results then go look thru a f.m. an say a dynomax welded magnum an see for yourself!!

Why would i go through the trouble when there is ''scientific'' results already done???
I need to justify spending the dollers to switch my mufflers to another brand and it seems that there is hard evidence that flowmasters do not flow as well.............so lets see the evidence!

 

[UNGN]

Originally posted by Cheeseburger
Or if i change them i will see more hp??,i am not sure if i would put money on that!

I'd put a buck on it.

I know there is no logical reason they would make MORE horsepower than a straight through muffler, so they will either make the same or less.

I'll go with less.

 

[UNGN]

Originally posted by Cheeseburger

Originally posted by UNGN
It's a scientific fact that flowmasters have more backpressure than straight through designs like Ultraflows.

Who was the scientist that conducted the experiments on the various mufflers?
I would like to see the report so i can compare the different cfm ratings.

All tests via an independent lab
All tests @ 15” wc

2 “ Straight Pipe 283 CFM
2 ¼ “ Straight Pipe 365 CFM
2 ½ “ Straight Pipe 521 CFM

2 ¼” Typical Bent tailpipe 268 CFM
2 ½” Typical Bent Tailpipe 417 CFM

2 ¼” Inlet/Outlet_ Glass Pack Tips- No Louvers- Smooth 274 CFM
2 ¼” Inlet/Outlet- Glass Pack Tips-Louvered 133 CFM
Same as above set for reverse flow 141 CFM
2 ¼” Cherry Bomb 239 CFM
2 ½” Cherry Bomb 294 CFM

2 ½” Inlet/Outlet Dynomax Super Turbo 278 CFM
2 ½” Inlet/Outlet Ultraflow Bullet 512 CFM
2 ½” Inlet/Outlet Gibson Superflow 267 CFM
2 ½” Inlet/Outlet Flowmaster ( 2 Chamber) 249 CFM
2 ½” Inlet Outlet Flowmaster ( 3 Chamber) 229 CFM
2 ¼” Inlet/Outlet Thrush CVX 260 CFM
2 ½” Inlet/Outlet Maremount Cherry Bomb 298 CFM
2 ½” Inlet/Outlet Hooker Aero Chamber 324 CFM
2 ½” Inlet/Outlet Hooker Max Flow 521 CFM
2 ½” Inlet/Outlet Borla Turbo 373 CFM
2 1/2" Inlet/Outlet Magnaflow 284 CFM

Standard OEM 2 ¼” Inlet/Outlet 138-152 CFM
Standard OEM 2 ½” Inlet/Outlet 161-197 CFM

 

[RUQWKNF27]

HUM

Who need "scientific results" we are talking about a muffler not the DNA from a killer in murder case. A muffler get it , its not hard to understand!!! Ok here we go again FLOWMASTERS= have baffles in the muffler, hence 2 chamber or 1 chamber design or 3 chambers. They work well foir NATURALLY ASPIRATED, cars cause they need back pressure. People like them cause they do free up some H.P an give a nice resonance. But for TURBO CARS we don't need baffles,chambers or anything in the way of the design of the muffler cause fou tr's BACKPRESSURE IS BAD. Don't need to be scientific to figure this one out, maybe you are just a hard headed person. But in your case with 3" exhaust running 10"s pushing a lot of boost they may seem ok to you. But the design of the flowmaster without the need of backpressure with our cars says you can go faster. Go to some Dynomax Bullets or straight pipes , then argue with me. End of case!!!!!

 

[RUQWKNF27]

Thank you UNGN

Now maybe everyone will see this in the future who types flowmaster under a search topic!!!!!!! In my opinion straigh pies are nice they are not as loud as some mufflers, untill you go WOT. But for $35+ you cannot beat the bullets by dynomax!!!!! Or maybe to hell with exhaust all together . Just run a downpipe LOL

 

[Cheeseburger]

Re: HUM

Originally posted by RUQWKNF27
Who need "scientific results" we are talking about a muffler not the DNA from a killer in murder case. A muffler get it , its not hard to understand!!! Don't need to be scientific to figure this one out, maybe you are just a hard headed person. But the design of the flowmaster without the need of backpressure with our cars says you can go faster. Go to some Dynomax Bullets or straight pipes , then argue with me.

Son, i was only asking for the HARD evidence so i can evaluate
How much of a gain per doller i can expect by spending my hard earned dollers on mufflers all over again.
A lot of people responded saying flowmasters do not flow well so i did not think it was a big deal to come up with evidence of this!

So in the words of RUQXKNF27,everybody with a turbo car and flowmasters should take them off and throw them in the garbage because he says there n.g.!

Also take note with 1 3 inch downpipe feeding 5.5 inches of exhaust pipe and 6 inches of muffler............i cannot see there being any back pressure,IMO.

 

[RUQWKNF27]

Ok Not Exactly

Well "son" like you say> My dad would get this. An nopeople with these "everyone" should not take these off there cars an throw them in the garbage. ONLY PEOPLE, wanting to get to the full potential of there car should. I mean look at the test results UNGN posted , I am not sure where that came from but i am not sure he typed it off the top of hiws head either ... Flowmaster=249 CFM, ok say you got 3" so maybe 300 cfm, an thts being generous. Now looh @ the bullet 512 cfm, hell a cherry bomb flows more tghan a flowmaster an they been around a long time. You ever seen one of those??? Wonder why they flow more HUH? Cause they are straight thru!!! Again see theere beside straight pipes 521 CFM. Hum I am kinda seeing a familiararity here... Also my personal experience is enough for me, I don't need these tests to support what I say. An really how much does it cost to change out mufflers or go to straight pipies.Cost me just 30 bucks. Give me your addy an i'll send it to ya, an maybe then you will see not just my experience but everyone elses on the board. How many times have you ever seen this "Changed to Flowmaster, now I am faster".....