Straight exhaust or Catback???
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From: Colorado
Straight exhaust or Catback???
I don't know if these 6.0 are running well with just straight 4 or 5 inch exhaust??Some say to only go cat back to keep more back pressure? What do you guys think???
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From: 3rd Rock
Re: Straight exhaust or Catback???
Originally posted by BagStroke
I don't know if these 6.0 are running well with just straight 4 or 5 inch exhaust??Some say to only go cat back to keep more back pressure? What do you guys think???
I don't know if these 6.0 are running well with just straight 4 or 5 inch exhaust??Some say to only go cat back to keep more back pressure? What do you guys think???
you'll be happy with the resuilts.
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Not sure on this but i was told by a old muffler guy that the exhaust is only as big as its smallest part. So if you have a 2 1/4 bend then there is no point in making the rest of the exhaust bigger. you would to remove the thinnest part first
I guess if you think about it the backpressure is already created at that small part.....
Always wondered if he was full of it or just a smart old muffler guy
I guess if you think about it the backpressure is already created at that small part.....
Always wondered if he was full of it or just a smart old muffler guy
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From: Stacy, Minnesota
go cat back or turbo back and leave the cat in. My Muffler guy said if you get caught driven on the streets with out the cat its a $20,000 fine. Off road only then its Ok but in MN they take your plates away then.
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From: Colorado
I just had my exhaust done today!!! I put a 3 1/2 to 4 inch down pipe (non smashed) 
.. 4 inch into and after the cat, opened the cat almost to 5 inches on both sides...No changes inside the cat..4 inch to Magnaflow muffler then to an Aero turbine muffler and out 4 inch. Tipped with a stainless 5 inch slash cut Aero rolled tip....Looks and sounds great!!! Runs strong!!!!!
.. 4 inch into and after the cat, opened the cat almost to 5 inches on both sides...No changes inside the cat..4 inch to Magnaflow muffler then to an Aero turbine muffler and out 4 inch. Tipped with a stainless 5 inch slash cut Aero rolled tip....Looks and sounds great!!! Runs strong!!!!!
Last edited by BagStroke; Feb 13, 2004 at 09:27 PM.
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For starters, If you go to the Banks web site, and read some of the interviews with Gale himself, you find a statment from Gale saying that the "Perfect" exhaust for a turbo diesel would be an 18" Megaphone! Turbo Diesels don't need backpressure after the turbo. There is a point where an increase in diameter will no longer improve performance, but the benefits of large diameter exhaust systems are more in line with lowering your Exhaust Gas Temperature (EGT) than with all out power increases. If your looking for "seat of the pants" power increases, you need a re-programmer or a chip too feel a real difference. When you hop the engine up with a chip/programmer though, you really need the BIG Exhaust to keep those EGT's COOL!!!!!!!
The concept of "The smallest part" of the exhaust determining backpressure is correct , but the ability of the exhaust to dissapate heat is a different story.......... With the past experiance of two 2000 7.3's, both with banks 3.5" turbine outlet pipes, Truck "A" with a 3.5" exhaust and Truck "B" with a 4" exhaust, with the same +80hp/150#/ft chip. Truck "A" ran 150-200 degrees hotter than Truck "B" under a semi-heavy load.
The concept of "The smallest part" of the exhaust determining backpressure is correct , but the ability of the exhaust to dissapate heat is a different story.......... With the past experiance of two 2000 7.3's, both with banks 3.5" turbine outlet pipes, Truck "A" with a 3.5" exhaust and Truck "B" with a 4" exhaust, with the same +80hp/150#/ft chip. Truck "A" ran 150-200 degrees hotter than Truck "B" under a semi-heavy load.
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From: 3rd Rock
Originally posted by BagStroke
I just had my exhaust done today!!! I put a 3 1/2 to 4 inch down pipe (non smashed).. 4 inch into and after the cat, opened the cat almost to 5 inches on both sides...No changes inside the cat..4 inch to Magnaflow muffler then to an Aero turbine muffler and out 4 inch. Tipped with a stainless 5 inch slash cut Aero rolled tip....Looks and sounds great!!! Runs strong!!!!!
I just had my exhaust done today!!! I put a 3 1/2 to 4 inch down pipe (non smashed)
.. 4 inch into and after the cat, opened the cat almost to 5 inches on both sides...No changes inside the cat..4 inch to Magnaflow muffler then to an Aero turbine muffler and out 4 inch. Tipped with a stainless 5 inch slash cut Aero rolled tip....Looks and sounds great!!! Runs strong!!!!!
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From: 3rd Rock
Originally posted by Paul 33
For starters, If you go to the Banks web site, and read some of the interviews with Gale himself, you find a statment from Gale saying that the "Perfect" exhaust for a turbo diesel would be an 18" Megaphone! Turbo Diesels don't need backpressure after the turbo. There is a point where an increase in diameter will no longer improve performance, but the benefits of large diameter exhaust systems are more in line with lowering your Exhaust Gas Temperature (EGT) than with all out power increases. If your looking for "seat of the pants" power increases, you need a re-programmer or a chip too feel a real difference. When you hop the engine up with a chip/programmer though, you really need the BIG Exhaust to keep those EGT's COOL!!!!!!!
The concept of "The smallest part" of the exhaust determining backpressure is correct , but the ability of the exhaust to dissapate heat is a different story.......... With the past experiance of two 2000 7.3's, both with banks 3.5" turbine outlet pipes, Truck "A" with a 3.5" exhaust and Truck "B" with a 4" exhaust, with the same +80hp/150#/ft chip. Truck "A" ran 150-200 degrees hotter than Truck "B" under a semi-heavy load.
For starters, If you go to the Banks web site, and read some of the interviews with Gale himself, you find a statment from Gale saying that the "Perfect" exhaust for a turbo diesel would be an 18" Megaphone! Turbo Diesels don't need backpressure after the turbo. There is a point where an increase in diameter will no longer improve performance, but the benefits of large diameter exhaust systems are more in line with lowering your Exhaust Gas Temperature (EGT) than with all out power increases. If your looking for "seat of the pants" power increases, you need a re-programmer or a chip too feel a real difference. When you hop the engine up with a chip/programmer though, you really need the BIG Exhaust to keep those EGT's COOL!!!!!!!
The concept of "The smallest part" of the exhaust determining backpressure is correct , but the ability of the exhaust to dissapate heat is a different story.......... With the past experiance of two 2000 7.3's, both with banks 3.5" turbine outlet pipes, Truck "A" with a 3.5" exhaust and Truck "B" with a 4" exhaust, with the same +80hp/150#/ft chip. Truck "A" ran 150-200 degrees hotter than Truck "B" under a semi-heavy load.
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From: Colorado
I told the guy at the shop I would tell people about him on this site!!! So he did the whole thing for are you ready...$300...That is a steal...He wanted to do a run with a 6.0 to take pics for his shop for advertisement as well....
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From: Dallas
Originally posted by BagStroke
I told the guy at the shop I would tell people about him on this site!!! So he did the whole thing for are you ready...$300...That is a steal...He wanted to do a run with a 6.0 to take pics for his shop for advertisement as well....
I told the guy at the shop I would tell people about him on this site!!! So he did the whole thing for are you ready...$300...That is a steal...He wanted to do a run with a 6.0 to take pics for his shop for advertisement as well....