Exhaust questions
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Elder User
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Exhaust questions
Whats the difference between the 304 stainless, the 409 stainless and the aluminized? What are the benifits of each? What thickness are they? Whats the main difference in the exhausts you see on ebay that brag about their thickness? Looking at getting one eventually but havent decided which one would suite me. I have an 05 CC LB 4x4 PSD and am looking for something that will perform well and be pretty loud, also turbo back and single side(not duals). Havent decided whether it will have cat or not, most likely yes, but possibly hollow just so they see it there. Thanks in advance, Eric.
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304SS will last the longest. It is more difficult to bend properly, I think that it needs to be bent with a mandrel bending machine.
409SS will rust out eventually, maybe a 5 year lifespan. A lot of custom exhaust shops use it because it bends easily without a mandrel bending machine and they can call it a stainless steel system, which the customer assumes will last forever. OEM's use it for their SS systems because it's more cost effective than 304SS and is good enough to get through the warranty period. 400 series SS has higher carbon content and less chromium content than 300 series, which is why it will rust out some day.
Aluminized steel will probably last as long as 409SS for a lot less money.
It mostly depends on how long you intend to keep your vehicle. More than 5 years, I would go 304SS. Less than 5 years, I would go aluminized.
Of course, this is just my opinion on the matter.
409SS will rust out eventually, maybe a 5 year lifespan. A lot of custom exhaust shops use it because it bends easily without a mandrel bending machine and they can call it a stainless steel system, which the customer assumes will last forever. OEM's use it for their SS systems because it's more cost effective than 304SS and is good enough to get through the warranty period. 400 series SS has higher carbon content and less chromium content than 300 series, which is why it will rust out some day.
Aluminized steel will probably last as long as 409SS for a lot less money.
It mostly depends on how long you intend to keep your vehicle. More than 5 years, I would go 304SS. Less than 5 years, I would go aluminized.
Of course, this is just my opinion on the matter.
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From: Tennesee
EPD99,
Aluminized si good for economy and will work for folks in the southern regions of our country, 409 is what is used by all the majors for stock exhaust, gets ugly but lasts a good long time. 409 is magnetci and contains a lot of iron so it'll dis color just like your stock systemn does, 304 is a non magnetic stainless that contains a lot of nickel and chromium, hence the extra cost. It'll be around longer than you and I will and stays shiney if you have a mind to clean it occassionally.
Give us a call when you're ready for a system, we have all materials and can help you with questions too as well as provide the best price, check our policy on out site. Thickness on most all systems is 16 gauge, some of the offshore systems are thinner and some others claim to be 14 gauge, but if you put a caliper on them they are very close to 16 gauge.
Mark @ DPPI
Aluminized si good for economy and will work for folks in the southern regions of our country, 409 is what is used by all the majors for stock exhaust, gets ugly but lasts a good long time. 409 is magnetci and contains a lot of iron so it'll dis color just like your stock systemn does, 304 is a non magnetic stainless that contains a lot of nickel and chromium, hence the extra cost. It'll be around longer than you and I will and stays shiney if you have a mind to clean it occassionally.
Give us a call when you're ready for a system, we have all materials and can help you with questions too as well as provide the best price, check our policy on out site. Thickness on most all systems is 16 gauge, some of the offshore systems are thinner and some others claim to be 14 gauge, but if you put a caliper on them they are very close to 16 gauge.
Mark @ DPPI
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From: Dark side of the moon
Simple question i been meaning to ask, think I know the answer...
- Cat back is new exaust from the catalyst back?
- Turbo back is new exaust from the turbo back?
- You can keep the catalyst with the turbo back system? Just get the increased diameter down pipe?
- If you change out to the cat back system and decide it was not enough can you buy just the down pipe later?
- Cat back is new exaust from the catalyst back?
- Turbo back is new exaust from the turbo back?
- You can keep the catalyst with the turbo back system? Just get the increased diameter down pipe?
- If you change out to the cat back system and decide it was not enough can you buy just the down pipe later?
Laughing Gas
Joined: Nov 2003
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From: PHOENIX
Originally Posted by Antacus
Simple question i been meaning to ask, think I know the answer...
- Cat back is new exaust from the catalyst back?
- Turbo back is new exaust from the turbo back?
- You can keep the catalyst with the turbo back system? Just get the increased diameter down pipe?
- If you change out to the cat back system and decide it was not enough can you buy just the down pipe later?
- Cat back is new exaust from the catalyst back?
- Turbo back is new exaust from the turbo back?
- You can keep the catalyst with the turbo back system? Just get the increased diameter down pipe?
- If you change out to the cat back system and decide it was not enough can you buy just the down pipe later?
YES
YES
YES
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From: Tennesee
Antacus,
Yes the MBRP will allow the cat to be bolted in with NO modifications, as far as I know none of the other systems will let you do that without cutting up the cat! Call us if you have any questions we'll be glad to help you with them.
Mark @ DPPI
Yes the MBRP will allow the cat to be bolted in with NO modifications, as far as I know none of the other systems will let you do that without cutting up the cat! Call us if you have any questions we'll be glad to help you with them.
Mark @ DPPI
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Joined: Feb 2005
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From: South Florida
Mark I have a couple questions.
1.What is the difference between the T-304 and T-409 Stainless steel system? Is it REALLY worth the $300+ dollars?
2. What advantages other than rust protection does the stainless provide over the aluminum?
3. With the turbo-back kit and stock Cat will the truck still be able to pour black smoke out or does it have to be cat-less to puff all the smoke out? (I wanna cover some ricers in smoke
)
1.What is the difference between the T-304 and T-409 Stainless steel system? Is it REALLY worth the $300+ dollars?
2. What advantages other than rust protection does the stainless provide over the aluminum?
3. With the turbo-back kit and stock Cat will the truck still be able to pour black smoke out or does it have to be cat-less to puff all the smoke out? (I wanna cover some ricers in smoke
)
New User
Joined: Sep 2005
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From: key largo florida
Exhaust question
i have a 2006 f250 4x4 psd just got it i was going to get a full turbo back exhaust on it i had to stop at ford for a service question and they said to me if i change the exhaust i will void the warranty on the complete engine do you think this is true does anybody know if the exhaust is restricted alot on the new trucks i looked under there and the down pipe looks pretty good also have a caton it looking for better milage all i have now is a super chip 1706 boy is it fast i had a 2003 f250 gas 5.4 before i will never go back to gas !!
Last edited by 2006 PSDamarillo; Sep 13, 2005 at 05:52 PM.
Elder User
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From: Dark side of the moon
I really wanted to fully understand the differences before I called my local Ford dealership. It would be good to know what I am asking when I ask if a new exaust will void the warrenty in their eyes. One step at a time, but I'll be calling you in the next month or two Mark.
Elder User
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From: Tennesee
dieselpwr,
409 is a magnetic stainless it's basically the same material as the stock system, it will turn brow/gray and get some spots on it etc just lieki a stock system will. 304 is a non magnetic stainless it contains a lot of nickle and chromium, therby the extra cost, it will stay just like the day you take it out of the box for longer than you and I will be around anyway! Remember too the 304 includes the duall wall tip in the price the 409 doesn't so the cost differential is really like 240.00 difference. Still a chunk of money but for those that want the best or live is salty locations or plan to keep the truck for a loooog time it['s worth it. The aluminized works great for folks in the South, but it will fail much quicker than 409 . The cat won't impede your smoke at all, I do it eveyrday on the I-65 on ramp after work!! Call us if you have any questions we'll be glad to help.
Mark @ DPPI
409 is a magnetic stainless it's basically the same material as the stock system, it will turn brow/gray and get some spots on it etc just lieki a stock system will. 304 is a non magnetic stainless it contains a lot of nickle and chromium, therby the extra cost, it will stay just like the day you take it out of the box for longer than you and I will be around anyway! Remember too the 304 includes the duall wall tip in the price the 409 doesn't so the cost differential is really like 240.00 difference. Still a chunk of money but for those that want the best or live is salty locations or plan to keep the truck for a loooog time it['s worth it. The aluminized works great for folks in the South, but it will fail much quicker than 409 . The cat won't impede your smoke at all, I do it eveyrday on the I-65 on ramp after work!! Call us if you have any questions we'll be glad to help.
Mark @ DPPI
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Posts: 968
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From: Tennesee
2006 PSDamarillo,
Ok here's a question fro you to ask the dealer. How have folks been adding cat back exhaust and headers on Mustangs since the early 1980's and never had a warranty issue? They are leaving the cat stock just like we do and the headers are basically the same as our down pipe???? I have doen this and you get a really stupid look form the dealer, especially when you show him the Ford Motorsports book with headers and cat back exhaust for sale in it!!!
Mark @ DPPI
Ok here's a question fro you to ask the dealer. How have folks been adding cat back exhaust and headers on Mustangs since the early 1980's and never had a warranty issue? They are leaving the cat stock just like we do and the headers are basically the same as our down pipe???? I have doen this and you get a really stupid look form the dealer, especially when you show him the Ford Motorsports book with headers and cat back exhaust for sale in it!!!
Mark @ DPPI