Correction....13HP & 14TQ Stillen Exhaust System!
Originally posted by articfury
The Stillen system doesn't use a Y-pipe. It uses an X-pipe, which bolts up to the Cats.
The HKS system uses an H-pipe. IIRC, the X-pipe design should perform better.
The Stillen layout is almost identical to the layout of my exhaust. Obviously, the Stillen is different because it is stainless and mandrel bent. They also use a set of resonators, which I have not done. (Juries still out on whether I want to do that.)
Marcus-
Since Saturday, I have been trying to notice where the power comes on. It is so unscientific, but it still feels like the low 3's when power comes on strong. I will say this, I have almost 2000 miles on the car with the exhaust, and until Brad mentioned that he felt like it is was slower that one time, I never noticed any point where it was slower. Does anyone know if this car has per gear fuel/timing mapping? I guess a dyno run with all the gears would solve the 3rd gear question.
I will be very interested to see the dyno sheets, and hear this exhaust.
JD
The Stillen system doesn't use a Y-pipe. It uses an X-pipe, which bolts up to the Cats.
The HKS system uses an H-pipe. IIRC, the X-pipe design should perform better.
The Stillen layout is almost identical to the layout of my exhaust. Obviously, the Stillen is different because it is stainless and mandrel bent. They also use a set of resonators, which I have not done. (Juries still out on whether I want to do that.)
Marcus-
Since Saturday, I have been trying to notice where the power comes on. It is so unscientific, but it still feels like the low 3's when power comes on strong. I will say this, I have almost 2000 miles on the car with the exhaust, and until Brad mentioned that he felt like it is was slower that one time, I never noticed any point where it was slower. Does anyone know if this car has per gear fuel/timing mapping? I guess a dyno run with all the gears would solve the 3rd gear question.
I will be very interested to see the dyno sheets, and hear this exhaust.
JD
TX
Re: Correction....13HP & 14TQ Stillen Exhaust System!
Mind you this is Stillen...
they also claim 8 hp gains from swapping cats and 9 hp from their intake for the Maxima.
13hp would be a miracle for any exhaust system.
im not getting my hopes up...
they also claim 8 hp gains from swapping cats and 9 hp from their intake for the Maxima.
13hp would be a miracle for any exhaust system.
im not getting my hopes up...
Originally posted by webcarconnection
Thats rigth 13hp & 14tq with Y pipe (all SS) and its price $1,095.00
http://www.stillen.com/morenews.asp?id=30
Thats rigth 13hp & 14tq with Y pipe (all SS) and its price $1,095.00
http://www.stillen.com/morenews.asp?id=30
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From: manchester united
Originally posted by bastard
$2250 for 21 hp? are you insane?
$2250 for 21 hp? are you insane?
21HP for $2200, and not to mention the weight saving from all the full titanium setup. You wanna play, you gotta pay.
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From: Texas
Originally posted by SandMan
13HP for around $1100
21HP for $2200, and not to mention the weight saving from all the full titanium setup. You wanna play, you gotta pay.
13HP for around $1100
21HP for $2200, and not to mention the weight saving from all the full titanium setup. You wanna play, you gotta pay.
sidemarker
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From: manchester united
Yes it is quite pricey, but it isn't a turbo it is an exhaust, even if you have a turbo you will eventually need a good exhaust system to compliment it. So if you want to squeeze as much HP as possible, it will be expensive. I mean why would anyone buy a Rolex when they can buy 20 Casio. That could be said about anything, If your going to do it big, then it will cost you.
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From: Puerto Rico
Originally posted by sidemarker
call me a newbie but how the hell do you get 21 hp from an exhaust?
is this including some type of exhaust manifold?
sidemarker
call me a newbie but how the hell do you get 21 hp from an exhaust?
is this including some type of exhaust manifold?
sidemarker
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From: Irvine, Ca
Originally posted by webcarconnection
The Amuse system comes with a Y pipe that cut the Cats, there is a extra 10 rwhp for the system, w/o the Y pipe the system puts around 12 rwhp.
The Amuse system comes with a Y pipe that cut the Cats, there is a extra 10 rwhp for the system, w/o the Y pipe the system puts around 12 rwhp.
Originally posted by integrate
They cut the pre-cats. Not the main cat.
They cut the pre-cats. Not the main cat.
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From: Irvine, Ca
Originally posted by westpak
OK, I keep hearing about pre-cats and main cat, but on the diagrams I only see 2 cats and that is it, the center one is called center muffler, or as many call silencer, the y-pipe is called exhaust front tube and then you ave the main muffler, where is this main cat????
OK, I keep hearing about pre-cats and main cat, but on the diagrams I only see 2 cats and that is it, the center one is called center muffler, or as many call silencer, the y-pipe is called exhaust front tube and then you ave the main muffler, where is this main cat????
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From: Santa Cruz, CA
The three way catalyst is not three different chambers, but instead a single chamber where the chemical reaction takes place.
I forget the formula for the reaction, but inside the catalytic converter is a fine mesh of material (in order to provide a large surface area for the reaction to take place) that is coated with the elements used in the reaction. IIRC, it is called a three way catalyst because there are multiple elements on the mesh and three reactions take place. You have something like:
A --> B
B --> C
C --> D
Where A is the unburned fuel remains and D is basically CO2 and H2O. B and C are intermediate hydrocarbons that eventually get converted to D.
Because lead will destroy the materials used in the converter, you cannot put leaded gasoline into modern cars since it will ruin their (the cat's, not the car's) performance.
The reaction requires heat in order to work, so the cats are placed as close to the exhaust ports as possible in order to allow the hot exhaust gasses to heat the cats as quickly as possible. This is also why some car makers are toying with the ideas of electrically pre-heated cats so the will begin working right when the car is started.
I think most of what I have posted is close to correct, but if anyone knows the details, please add or correct me.
-D'oh!
I forget the formula for the reaction, but inside the catalytic converter is a fine mesh of material (in order to provide a large surface area for the reaction to take place) that is coated with the elements used in the reaction. IIRC, it is called a three way catalyst because there are multiple elements on the mesh and three reactions take place. You have something like:
A --> B
B --> C
C --> D
Where A is the unburned fuel remains and D is basically CO2 and H2O. B and C are intermediate hydrocarbons that eventually get converted to D.
Because lead will destroy the materials used in the converter, you cannot put leaded gasoline into modern cars since it will ruin their (the cat's, not the car's) performance.
The reaction requires heat in order to work, so the cats are placed as close to the exhaust ports as possible in order to allow the hot exhaust gasses to heat the cats as quickly as possible. This is also why some car makers are toying with the ideas of electrically pre-heated cats so the will begin working right when the car is started.
I think most of what I have posted is close to correct, but if anyone knows the details, please add or correct me.
-D'oh!
Last edited by D'oh; Jan 23, 2003 at 09:29 PM.
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From: Puerto Rico
Originally posted by articfury
web-
Actually, I like the design of the Stillen better. It should flow better. But we will just have to wait to see the numbers.
JD
web-
Actually, I like the design of the Stillen better. It should flow better. But we will just have to wait to see the numbers.
JD
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