Simple question... which is better flowmaster or dynomax. I want to get either but would like to get the best.

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84 Z28 Purple/silver

 

Don't know about dynomax, but Flowmasters' are sweet.....even sweeter with headers!

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92 Camaro RS LO3, 5-spd, T-tops
Performance:
SLP 1 3/4" Headers (Coated by Paul Barry Motorsports), Flowmaster Catback Exhaust, Fastchip Performance PROM, Centerforce Dual Friction Clutch, Xact 8mm wires, Open Air Element w/K&N Filter, Z28 Grille w/aftmkt fog lamps
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, Edelbrock performer intake

 

I have Flowmaster and had the same on my 84 and love the sound, but in a test I read the Dynomax made more power. No, I don't remember the magazine or date.

 

If u want sound, get the Flowmaster.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.

 

what is this a REAL question??? flows are the"ONLY" muffler!!!! they sound awesome with 3"pipe and hedders

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89 firebird formula


356 10.7:1compression
comp cams xe262 cam
performer rpm intake
#1405 edlebrock 600
434 casting completely redone with bronze guides and 202/160 valves 64cc chambers. decked .0005 thousandths
msd 6al
h.e.i. proform 50,000 volt vac. advance ditributor
700r-4 with 3.08 first gear and 3.23 posi 7 5/8 rear end.
b trans shift kit(will kill shifts...suck dong!!)
shorty heddman hedders with custom 3" pipe y-pipe back(no damn cat!) with 40 series flowmaster!

future mods: 406 roller REALLY REALLY REALLY RADICAL!!!!!

 

I have had bouth flowmasters and dynomaxx turbo
muflers i like the flowmasters, they sound alot
better than the dynomax but i did not notice
a performance diffrance.so i would go with the flows.

 

i had a dynomax on my car when i bought it. it was about the same as stock. now i have a flowmaster, i love the sound. ive heard stuff that dynomax flows a little bit better. Its a matter of opinion. if u want the muscle car sound go 4 the flowmaster

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89' Firebird Formula WS6 L98, MSD 6AL MSD Blaster, Hypertech chip, K/N filter cone,flowmaster 80 series, hypertech air foil, koni shocks, edelbrock trailing arms

 

flow & power = Dynomax
duability = Flowmaster

 

You probably won't feel a difference in the seat of your pants from switching one muffler to the other. It really ends up being what sound do you like and what do you want to spend. I have had both mufflers on my car, that's why I feel that way.

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'85 Z28 Copper/ Gold, LG4
dual snorkel w/ ram air, Accel Cap Rotor and 8MM wires, Edelbrock Headers, Catco Cat, Flowmaster 80 series
American Racing Wheels. 350 crate in the future.

 

Just a quick question, I know that there are different series Flowmasters, which one is the loudest and quietest?

 

i know they have two catbacks for our cars, the american thunder and force II, the force II isnt as loud as the american thunder system.

the american thunder uses 80 serries mufflers which are pretty loud. i think the 80 serries mufflers are the same loudness as the 40 serries, not sure though.

get the flowmasters, they'll last a lot longer, and give you one heck of a beautiful sound!

 

Is getting a cat back system that worth it. Im scheduled to get a hefty refund check so I can swing it <finally>. Also what is a decent price someone should be charged for it? I want to make sure i am not being ripped off <which happens more than id like to admit>

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84 Z28 Purple/silver

 

I run with the Dynomax super turbo. It is very quiet at idle, but when its time to go (WOT)it is very strong sounding. Plus it keeps the cops off my a$$.

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87 Z28 305 TPI, Auto, LT-1 cam (peanut is history), roller timing set, 2.73, Gutted air boxes, K & N fillters, Dyno Max 3" cat back, 8.8 mm spirals, rapid fires, and 170* Stat.
Old Best 15.414 @ 87.47.

“Fallen But Not Forgotten”

 

The sound of flowmaster is awesome! I have flows on my girl and the cadalidic converter is hollow so it makes it about 10X's louder. I have one of the noisiest ladies in town! And is it a beautiful noise!

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Beautiful Black Camaro RS with Pearl White Racing stripes. 305 TBI, 5-speed manual tranny, flow master exhaust, K&N air filter, no cadalidic converter, 2-10in. MTX subs, 500watt Auto Tech amp, and DF-88 Panosonic Head unit.

Soon to come: Pics...

 

I like the Flowmaster's (30 series, orig design), too, but gotta be honest and say I just swapped them out for 2 reasons:

Drive me up the wall on long highway trips...

REALLY do attract the attention of law enforcement personnel under even minimal throttle use.

Swapped to Dynomax's... Kinda miss the Flow sounds, now, but I still remember how loud it was... I would bet that the Delta Flow new series in the 40 config (3 chambers instead of two) would be ok... Maybe i'll try them in SPring.

 

I prefer Dynomax; simply because everyone and their horses around here run Flowmaster. I hate hearing "yeah, and I got flows on it"...


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

I'm running Flowmaster's AT dual 3 inch outlet cat back. It's sounds great, it's acutally quieter than I thought it would be at low rpm's. When you step on the gas, they come alive with a very aggresive sound. I had an older Flowmaster 2.5 inch dual-outlet muffler on it previously and it was not as aggresive, but had a similar tone. I'm very happy with the current setup, it sounds great with headers!! I've also run cheaper (super turbo) dynomax mufflers on my old 63 Comet and have been happy with them too! That is really a different design though....

Barry Izold
89 T/A, GTA
Modded 350/T-5

 

I was wondering, Does anyone have the Dynomax Ultra Flo system. How does it compair to the Super turbo, or the Flowmaster system? Thanks

 

The UltraFlo's look pretty cool. As i recall, they're stainless so you don't have to worry about rust, and they sound pretty freakin good (kinda like Borla's)

-Rich

 

I run Dynomax turbos and they sound deeper than flows at idle and they have a sweet tone to them in the upper RPMs. The muffler is a little burned out so the fiberglass inside might not be doing such a good job anymore. My buddy had flows on his 87 GTA and they were just too tinny sounding. Upper RPMs were pretty good but they just seemed to loud and tinny. My Dad's delta flow flowmaster's on his 68 nova rusted a hole in them. They held a bunch of moisture in them then it just rusted through!

 

1989 RS Stock Camaro:
FIRST MOD:
3" American Thunder Cat-Back From Flowmaster
Gutted Cat while i was in there...
Result:
SUPER AGGRESIVE while being Stepped into, NOT just at WOT....
At highway and around town RPM's you can barelly hear it... PERFECT!!
sets off car alarms appropriatelly, makes people stare at you appropriatelly, makes neighbors wake up a little earlier than usuall.... make sure u gut the cat thats all ;-) i love it!

 

I prefer Dynomax since the wife won't ride with me if it's too noisy. The only thing I don't like about my system was the installation of that damned 1-piece I-pipe, which is hard to do in a parking lot with ramps and a truck jack.

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1990 IROC 350
Mods: Too busy trying to make it run right to mod it.
Airfoil, Dynomax cat-back, Accel coil, 180 t-stat, Bald Eagle tires,
Hypertech fan switch, Ruger P95DC, hot wife, new oil filter,
thick rubber floormats, towels in the seats.
18.0 @ 85MPH since I'm one big-a$$ MF
"It's better to have and not need than to need and not have."

 

I have the superturbos and although they aren't much louder at idle they have a nice tone and sound good at high rpm. I looked at the flowmaster setup on a firebird formula and I personally did not like the 2 tailpipe exit on the same side. With the superturbos I at least got the stock muffler look.

 

The new American Thunder 3inch Flowmaster catback uses a 3 inch slashcut (last 12 inches are stainless) pipe on each side. The pipes are not flared or adapted, full 3 inches all the way to the tips. Doesn't look like stock. In my opinion, it looks better!!

Flowmaster makes more than one catback system for our cars. ex: single outlet, dual outlet, dual same side, dual opposite side. Make sure you select the right cat configuration. (single/dual cats) You can buy an 80 series 2.5 inch dual outlet muffler and use your stock tailpipes. I did this for awhile. It was almost silent at idle, noticeable under throttle. The three inch AT dual outlet catback is much more aggresive, though still pretty quiet at idle/cruising.

Barry Izold
89 T/A, GTA
Modified 350/T-5


[This message has been edited by GTAMAN63 (edited March 15, 2001).]