need whole exhaust system

[skwertle]

the cat-convert on my 95 broke so now i need a need one. unfortunately, it's welded on to my pipe on both ends (before and after). so, that means i need everthing!

I've been saving up to purchase the Dual N1 system and i have enough sort of. i don't want another cat, was thinking of getting a test pipe. Because, eventually it wont pass emissions anyways after i'm thru modding it. but i also need the part before the cat (either downpipe or header).

To make a long story short I need either a downpipe/header, test pipe, and dual N1 system. Does anybody know a place that sells a package like that?

I know that heavy throttle was selling a test pipe and n1 system but i don't see it on there site anymore.

[sixxdeuce]

you should look into buying a hotshot header with the cat back system of your choice. The hot shot header elimates the cat. So if your not worried about emissions testing you would solve the problem and add more power.

[driftaholic]

is there a header that doesn't eliminate the cat?

[skwertle]

you should look into buying a hotshot header with the cat back system of your choice. The hot shot header elimates the cat. So if your not worried about emissions testing you would solve the problem and add more power.

really, i didn't know that. but how does the hot shot header compare with others?

[MikeMurphy]

or maybe do the responsible thing and get a cat regardless of any emissions testing.

What the hell? Do we have to be policed for everything otherwise we take advantage of it and totally screw the environment way way more than we would with a cat? Im all about performance too but have just a bit of respect for the environment. The least we can do as automotive enthusiasts is have a cat on our cars, anything less shows me you have absolutly no concept of the world outside of your HP-hungry minds.

Before you take off your cat or recommend to anyone to take off their cat, do a bit of research on exactly what it does to the air coming out of your exhaust. Too many people have no clue.

[skwertle]

MikeMurphy

call me lazy but give me a link and i'll read it and then i'll reconsider my options.

[skwertle]

you should look into buying a hotshot header with the cat back system of your choice. The hot shot header elimates the cat. So if your not worried about emissions testing you would solve the problem and add more power.

correct me if i'm wrong but after doing a little bit of reading the hotshot header only replaces the cat in cars with 2 cat-converters. And in thoughs cases it only replaces the precat or first cat-converter.

I could be totally wrong about this but i just wanted to make sure before i started buying stuff.

[luis240sx]

As far as I know that is exactly what the Hotshot header does. It comes with a bung for the 02 sensor to be mounted in to.

[lucas_420]

dunno an exact link, but if you look up "high flow cats" or "high flot catalytic converters" on google you should find some good links for good cats...

Im with Mike on this one. Even though emissions are a pain in the azz, it doesnt mean we should just ignore our responsibility to the environment. We dont want the entire world to end up like LA county... I say save up and get a high flow cat. they are not cheap, but they do their job for emissions and allow you to pump up the power of your car. I have a friend with an 87 Alfa Romero who put a cat on his car that flows just 4CFM off that of a strait pipe.

4 CFM!!!!!

unless you're running a T88 at max evviciency, I dont think its that much.I know they cost a bit more than an OEM cat, people need to start taking some responsibility or no one will take racers seriously...

I dont wanna come off as preachy but this can become an issue quick.

Besides this same friend is putting a 500cid 600hp motor in his other car... a 1960 caddy:)

[MikeMurphy]

MikeMurphy

call me lazy but give me a link and i'll read it and then i'll reconsider my options.

The catalyst helps to convert carbon monoxide into carbon dioxide. It converts the hydrocarbons into carbon dioxide and water. It also converts the nitrogen oxides back into nitrogen and oxygen. Follow up on the following link,

http://auto.howstuffworks.com/...r.htm

then do a search on the effect the untreated molecules have on the environment. Im not going to bother searching but my environmental geography class definitly showed my the effect that some molecules have, and why exactly. Some molecules are thousands of times more detrimental to the air and the ozone than others. I dont have my notes anymore but I guarantee it can be found on the net. I just about **** myself when I read (im sorry, i totally cant remember which molecule it was) a certain molecule that I read about earlier in the above link was on that list. I made the comment in class and she was thankful that we had catalytic converters.

Im no "tree hugger" or anything, but lets be thankfull we have decent air outside and our beloved engines run on it. Cats sometimes cost some extra $$$ but think of it as giving a little bit back for our kids to enjoy the same things we enjoy.

[lucas_420]

is that "hydrocarbons" you were thinking of?

Im trying to remember from high school mechanics which one that was...

[daniel240]

why do you need to replace the whole exhaust system if just the cat is bad? which cat is bad? if its the 1st one then you can just get the hs headers to replace it. yes if your going to get headers then definetely get hs. i would just get new piping welded on from your cat back if you want to replace it.

[skwertle]

As far as I know that is exactly what the Hotshot header does. It comes with a bung for the 02 sensor to be mounted in to.

and the hotshot flange would bolt directly the say a dual N1 flange?

[Anand]

first.. the first cat is the real cat in north american cars.. the second cat is just a dummy cat so getting a test pipe to replace that is just a waist of money. another if you replace the first cat with the headers, you can still put a real high flow cat in place of the dummy cat and it should help a lot with the emmisions.

[daniel240]

not all 240's 2nd cat is a dummy cat.

[Just another 240]

we have 2 cat? i thought we have 1.

but anyways i don't know how yourside of the law goes, but in nyc i THINK if you are found with no cat on your car your car get impound and you get arrested. And they do start to check with the lil handheld mirror shiet.

[daniel240]

just take the cat off and gut it and weld a pipe through it. them put it back on. so you still have the shell of the cat then they cant tell. i think the 240s are different, some have 1, some have 2 i think all have 2, but some just have a dummy. the first is kind of oval shape and is right after the manifold, and the 2nd is bigger and more of a rectangle, it is under the drivers side. its like that on the s14s i know. i know some have a dummy cat and some dont. mine does not have a dummy, but i got HS headers which replaced the 1st cat and i took the 2nd cat off and gutted it and ran a pipe through it, so it still looks like i have 1 cat.

[skwertle]

just take the cat off and gut it and weld a pipe through it. them put it back on. so you still have the shell of the cat then they cant tell. i think the 240s are different, some have 1, some have 2 i think all have 2, but some just have a dummy. the first is kind of oval shape and is right after the manifold, and the 2nd is bigger and more of a rectangle, it is under the drivers side. its like that on the s14s i know. i know some have a dummy cat and some dont. mine does not have a dummy, but i got HS headers which replaced the 1st cat and i took the 2nd cat off and gutted it and ran a pipe through it, so it still looks like i have 1 cat.

I have a 95 so my car should require the same set up.. except my cat doesn't have any flanges on it. It is welded to the pipe which is why i am in this situation now.

[Zebrahead]

or maybe do the responsible thing and get a cat regardless of any emissions testing.

What the hell? Do we have to be policed for everything otherwise we take advantage of it and totally screw the environment way way more than we would with a cat? Im all about performance too but have just a bit of respect for the environment. The least we can do as automotive enthusiasts is have a cat on our cars, anything less shows me you have absolutly no concept of the world outside of your HP-hungry minds.

Before you take off your cat or recommend to anyone to take off their cat, do a bit of research on exactly what it does to the air coming out of your exhaust. Too many people have no clue.

Well said.

Nick.

[Anand]

the north american cars should only have one cat not 2... the cars for canada have noth cats... tahts from what I have seen and researched

[daniel240]

I have a 95 so my car should require the same set up.. except my cat doesn't have any flanges on it. It is welded to the pipe which is why i am in this situation now.

your car must have had exhaust work done on it previously since the cats welded on. muffler shops wont put a straight through pipe in your cat. believe me, ive went to 3 diff. ones and they all said they can get fined. so if you dont know how to weld i guess your only option is to get another cat and have the muffler shop weld it on.

[Tino]

Maybe the resonator your thinking of? Oh by the way on exhausts these mother****ers charged me 225 to install apex muffler to cat and they won't even use 3" piping because they claimed a many a reasons it would be worse for el nismo? I'm really taking it up the tail pipe here, no pun intended.

[daniel240]

did the 225 include the muffler because if it didnt than you got ripped off! i got my exhaust w mandrel bent 3in piping from the cat back and a magnaflow muffler all for $280. and no i wasnt talking about the resonator. there are two cats and a resonator.

[Tino]

I know dude totally ripped off. Oh well. I'm selling it anyhow.

[MikeMurphy]

i was under the impression that the first cat was placed closer to the exhaust manifold if not actually part of it so that it heats up faster because it needs to be hot to work properly. First few moments a car starts up are the most critical.

[daniel240]

i was under the impression that the first cat was placed closer to the exhaust manifold if not actually part of it so that it heats up faster because it needs to be hot to work properly. First few moments a car starts up are the most critical.

yes it is. it actually bolts directly onto the stock manifold itself, which is very short, and then theres a pipe that goes from the 1st cat to the 2nd cat, which is right under the drivers side of the car.

[Phax]

or maybe do the responsible thing and get a cat regardless of any emissions testing.

What the hell? Do we have to be policed for everything otherwise we take advantage of it and totally screw the environment way way more than we would with a cat? Im all about performance too but have just a bit of respect for the environment. The least we can do as automotive enthusiasts is have a cat on our cars, anything less shows me you have absolutly no concept of the world outside of your HP-hungry minds.

Before you take off your cat or recommend to anyone to take off their cat, do a bit of research on exactly what it does to the air coming out of your exhaust. Too many people have no clue.

Mike,

My mechanic talked me into keeping a cat on my car, but not because of the environmental angle on it. I'm not sure where the guy who started this thread lives at, but here in California, the cops (especially the Highway Patrol) are way up on their car laws. They get especially excited about checking out cars that look modified in any way.

Most of the time, pulling the cat isn't going to make a huge big difference in performance. And the 10-30 or whatever horsepower you might get out of the deal, isn't worth the hassle and potential cost of getting a ticket.

[daniel240]

10-30hp?? more like 2-5 if that, sometimes you might lose hp if theres not enough backpressure. man im glad i dont live in Cali. cops around here probably dont even know what a cat is.i never have to worry about anything like that.

[skwertle]

i'm the guy who started this thread and i live in houston, tx. Houston just started checking emission but only Houston. So, i can still drive outside of houston to get my inspection done,.. until next year at least.

the reason why i need new stuff is cuz everything is welded as one piece by some muffler shop with a muffler that doesn't even fit my car correctly.

The hangers are not in the right place so when i step on the gas sometimes it shakes my whole car and actually hits up against my rear cross member(or something like that). I thinks that's what helped cuz my cat to go out in the first place. so i need a new exhaust system so this doesn't happen again and i don't want anything welded to anything so i don't run into this bull again.

I have been saving up for a dual N1 system, which I do have enough for now. Actually, i have enough for everything but i would have to did heavely into my savings to do it.

Another question for you guys. Will the HS header bolt on to the 3inch Dual N1's. I plan to go turbo hopefully next year and don't want to have to deal with getting a new exhaust.

If not what are my options.

thanks alot you guys have been a great help

[Tino]

Wait the headers are before the cat correct? the system your getting only goes up to the cat.