Catalytic Converter / Header????

[Tominos]

no check engine light so far. the extension is pretty long, maybe about 30 in. long, but as long as its okay, its okay. now i have a clinking noise, i don't know what it can be, for example, when you put it in a higher gear and try to start off, it makes the engine vibrate a little more, so then theres a noise coming from the engine bay, i think its maybe the extension, i ziptied it along the tranny(it was the only way), the plug that connects the o2 to the other connector is maybe vibrating agains the transmission to make that clunking noise. it only happens when the car bogs and the engine is shaking alittle more than usual. has anybody else had this happen with header install? or could it be the header flange vibrating against the cat flange. its not that tight on there, and i can't get the spring bolts any tighter, so may be that too. lots of things, anybody care to share some insight? thanks alot

[riight112]

Hey people,

I was looking online and was wondering what the little mesh part on the pic below is. Is that some sort of catalytic converter or am I just dreaming? I've seen it on others too, like the HP Racing header. Please tell me it's a cat! =) Another question I have is I often see a bulg in many cat-back exhaust systems. What is that bulg? I have it on my greddy cat-back exhaus too.

[rx racer]

catalytic converters are for wussys

[ivymike1031]

that's a (more) flexible section of pipe, to help the exhaust system survive all the flexing, shaking, expanding, and contracting that it will go through.

the bulge that you refer to is most likely a resonator, used to change the tone of the exhaust. Another possibility is that you're looking at the muffler...

[SilverY2KCivic]

Originally posted by riight112
Hey people,

I was looking online and was wondering what the little mesh part on the pic below is. Is that some sort of catalytic converter or am I just dreaming? I've seen it on others too, like the HP Racing header. Please tell me it's a cat! =) Another question I have is I often see a bulg in many cat-back exhaust systems. What is that bulg? I have it on my greddy cat-back exhaus too.

It's a resonator can. It's there to both change the sound of your exhaust, and also to help quiet it down a little bit. Without it, it would be noticable louder to a degree. Exhaust systems typically have resonators with them too, I don't see many headers with them though.

[ivymike1031]

for more info on exhaust flex pipes (including pics):

http://www.epiflex.com/newflex.htm

[strodda]

if i keep the cat. converter, are resonators necessary for staying carb legal?? is their only purpose to change sound?

[ivymike1031]

yeah, the only purpose of a resonator (as compared to straight pipe) is to change the sound of the exhaust.

[strodda]

if i go straight pipe, do i need one to stay legal? and what size pipe should i get?

[95cvccvx]

I read a few articles that said that if your car is not producing alot of horse power, removing the cat for a straight pipe will only give u an extra 1-1.5 horse's. It also explained that torque stayed the same or drop just a little. I think the best way is to buy a three way hi-flow cat. 1. smog legal 2. police 3, almost same amount of power. If i'm wrong please someone tell me.

[fakehatch]

I own a 96 civic with d16y7 and want to get aftermarket haeders. I already have exhaust and cat, but can't find a header for d16y7, if iget one for d16y8-9, will it work????? Thanks

[SilverY2KCivic]

Originally Posted by fakehatch

I own a 96 civic with d16y7 and want to get aftermarket haeders. I already have exhaust and cat, but can't find a header for d16y7, if iget one for d16y8-9, will it work????? Thanks

If you already have an EX cat and exhaust system, then the Y8/9 header will bolt right up. ALL '96-'00 D-series motors will bolt up to the same headers, meaning an EX header WILL bolt up to a DX motor. It's just if you plan to keep your DX exhaust, that an EX header won't fit and will cause you to have to alter your exhaust system for it to fit and connect correctly.

[bmc2213]

hello i also have a d16y7 and i have a full dnx exhaust coming, headers, high flo cat, mid, axle back. what do i need to do to the O2 sensor if anything. and what should i do to pass smog test if any thing. im not in cali or anything im in vt. also could i get the explanation about gas to use again? eg gas to use at smog test and driving gas

[danielsatur]

With the money saved from buying aftermarket Cat's, it's worth getting a good local muffler shop todo some Art work welding.

[Cabalero7223]

I own a 1981 gmc caballero base model. It is a v6 3.8 L. I am having trouble finding headers and a supercharger that will fit this. Does anyone know if they make these for this or if i have to put a different engine in it. If you can give me a websitei can go to or anything it would really help. Thanks.