New Flowmaster Cat back system - Page 4 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jm1681 · 08-08-2012, 04:33 PM

Quote:

Originally Posted by Dimman

Then get an aluminized mild steel system that lasts 3 years for 1/2 the price of the 409 system.

You show me an aluminized system that'll last 3 years, and I'll show you a religious zealot that believes in same-sex marriage

On another note, the custom exhaust on my last car lasted me the 9 years I owned it, and considering that from cat to tip it cost me less than $450, I'm fairly positive it was NOT made of some gourmet steel.

Quote:

Originally Posted by Dimman

By the way 304 is nothing special it's the most common 300 series stainless. 321 is the fancy stuff. But the benefits don't come into play unless we are dealing with high temp and high vibration situations.

Exactly. We're (At least some of us) not dealing with racecars that run blazing EGTs. We're dealing with light-to-mild modded cars that can make do with "good enough" when it comes to something like this.

sirhc · 08-08-2012, 08:49 PM

looky what i found

[ame="http://www.youtube.com/watch?v=lQK_mmCT0H0"]Flowmaster American Thunder Cat-back System - 2013 Scion FR-S / Subaru BRZ - 817596 - YouTube[/ame]

jm1681 · 08-08-2012, 08:54 PM

That's going to work quite well for me

Thanks a bunch for posting

industrial · 08-08-2012, 09:39 PM

Sounds a bit raspy for me.

mike2100 · 08-08-2012, 09:43 PM

Well... it sounds like what I would imagine an American Thunder exhaust would sound like on a Subaru boxer

Dimman · 08-08-2012, 09:47 PM

Quote:

Originally Posted by mike2100

Well... it sounds like what I would imagine an American Thunder exhaust would sound like on a Subaru boxer

Voice over guy needs a muffler, too...

Heh.

mike2100 · 08-08-2012, 09:50 PM

Quote:

Originally Posted by Dimman

Voice over guy needs a muffler, too...

Heh.

yes

subzero05 · 08-09-2012, 10:56 AM

Quote:

Originally Posted by Dimman

What people may not realize is that not all 'stainless steel' is equal.

The Flowmaster systems on the domestics use 409 stainless steel. This is not as durable as 304 stainless steel. It is also a less expensive material. 409 is what is already on the stock car.

300-series (304, 316L, 321) have much better corrosion resistance than 400-series.

this is true but it also gets brittle much quicker than a 409 stainless , which is why you see more companies using a 400 series stainless. its common knowledge that 409 series stainless will typically last the life of the car and not crack like 300 series material can due to constant heat cycling

mike2100 · 08-09-2012, 05:23 PM

Quote:

Originally Posted by subzero05

its common knowledge that 409 series stainless will typically last the life of the car and not crack like 300 series material can due to constant heat cycling

Then why does aftermarket use 300 series despite it costing more?

JoeBoxer · 08-09-2012, 05:27 PM

Who cares it sounds like crap

subzero05 · 08-10-2012, 02:10 PM

it hardly sounded like crap.. Actually I think it sounds quite nice and sound is completely subjective!

As for the 300 stainless, most companies are using 400 series and only a few are running 304 and charge a boatload of $$ for it because its marketed as "aircraft quality" or whatever.. technically it is a better grade of stainless in terms of quality, but for exhaust applications in general its overkill for the most part

NYC BRZ · 08-10-2012, 02:23 PM

Too raspy for me. Not a fan.

MRZ415 · 08-10-2012, 02:43 PM

did flow master release weight information and gains ?

jm1681 · 08-10-2012, 03:49 PM

They did not, but Flowmaster typically doesn't list gains, far as I can tell at least.

Same with weight. Probably won't see that until someone puts it on a scale.

08-10-2012, 02:23 PM	#54
NYC BRZ AutoX Addict Join Date: Mar 2012 Drives: 08 Pontiac G8 GT,13 GBS BRZ Limited Location: Queens, NY Posts: 723 Thanks: 168 Thanked 118 Times in 83 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Too raspy for me. Not a fan. __________________ 2013 BRZ Limited- GBS - 6MT -VIN #0937 ~~NYR SCCA # 18 C Street R (CSR)~~ "But there’s no mistaking the noise. This car is loud, and not in a particularly nice way. There’s no crisp exhaust note, no induction wheezing. It’s just the sound of petrol exploding in a metal box." - Jeremy Clarkson

08-10-2012, 02:43 PM	#55
MRZ415 Senior Member Join Date: Dec 2011 Drives: 2015 Subaru WRX Location: San Francisco Posts: 339 Thanks: 41 Thanked 14 Times in 11 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	did flow master release weight information and gains ? __________________

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08-08-2012, 08:49 PM	#44
sirhc Senior Member Join Date: Jun 2012 Drives: fr-s Location: okc,ok Posts: 99 Thanks: 0 Thanked 45 Times in 20 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	looky what i found [ame="http://www.youtube.com/watch?v=lQK_mmCT0H0"]Flowmaster American Thunder Cat-back System - 2013 Scion FR-S / Subaru BRZ - 817596 - YouTube[/ame]

08-08-2012, 08:54 PM	#45
jm1681 Senior Member Join Date: Jul 2012 Drives: MKVI VW GTI Location: Suffern, NY Posts: 344 Thanks: 156 Thanked 38 Times in 32 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	That's going to work quite well for me Thanks a bunch for posting

08-08-2012, 09:39 PM	#46
industrial Add lightness! Join Date: Apr 2012 Drives: 17' WRX Location: Boston Posts: 1,253 Thanks: 380 Thanked 888 Times in 411 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	Sounds a bit raspy for me.

08-09-2012, 05:27 PM	#52
JoeBoxer Senior Member Join Date: Jul 2012 Drives: Whiteout FR-S Location: Arkansas Posts: 4,154 Thanks: 1,666 Thanked 1,627 Times in 997 Posts Mentioned: 72 Post(s) Tagged: 0 Thread(s)	Who cares it sounds like crap

08-10-2012, 02:10 PM	#53
subzero05 Member Join Date: Aug 2012 Drives: Fr-s Location: cali Posts: 13 Thanks: 0 Thanked 7 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	it hardly sounded like crap.. Actually I think it sounds quite nice and sound is completely subjective! As for the 300 stainless, most companies are using 400 series and only a few are running 304 and charge a boatload of $$ for it because its marketed as "aircraft quality" or whatever.. technically it is a better grade of stainless in terms of quality, but for exhaust applications in general its overkill for the most part

08-10-2012, 03:49 PM	#56
jm1681 Senior Member Join Date: Jul 2012 Drives: MKVI VW GTI Location: Suffern, NY Posts: 344 Thanks: 156 Thanked 38 Times in 32 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	They did not, but Flowmaster typically doesn't list gains, far as I can tell at least. Same with weight. Probably won't see that until someone puts it on a scale.

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