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The HP and Kamikaze seem like they're awesome, but I keep hearing mixed things about whether or not they are legal. I'm sure the DC ones are legal, but I've heard they suck.

So, which headers are legal, and which ones have the best performance?

Thanks,

IronFist

 
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Here you go

Kamikaze will never be street legal because it has no cat.

HP is not street legal also but some places don't need emission tests, so you may be ok and pass the visual inspection.

Best performance and legal can't not be put together for the 7gen civic. The only header that is legal is DC sports and thats it.

Your best bet is get dc sports header and replace your car with random technology high flow cat. That setup will be street legal.

 
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legal...pffffft

 
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Ok I have been looking but does anyone know if Dc makes a Stainless header for our civics and if they do is it just the upper or both sections.

 
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Just upper and no stainless

 
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dc sport is the only legal header... but here in florida they dont check emissions hahaha

 
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i think dc does make a staainless, but i could be wrong. I have the ceramic on my car....i cant really tell any power difference, but it does look and sound good. if i had the time and money to do it over again i would go with the hp or kamikaze.
header

 
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im glad i dont have to have testing done where i live, i removed my damn cat as soon as i bought my car,

 
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you people removing your cats... your cars sound like pissed off bee's ..... im sorry, but do an engine swap or something besides taking off your cat for "better performance" because you can hear your car for miles.. and the guy down the street got pulled over not once. but 3 times for noise pol. for having his cat removed on his ex 7th gen civic, im glad i got a hatch!

 
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Don't HP or Kamikaze make a top section only or something that is legal cuz it goes with the stock cat?

IronFist

 
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Would this be any different than keeping the stock header and just getting the random technology high flow cat? Since supposedly the DC header is the same as the stock one?

How much is this RT high flow cat? It doesn't sound like crap, does it? How much hp could I expect from it? Where could I get it?

Thanks,

IronFist

 
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My car isnt loud at all, and i have no cat, never been asked about it when iv been pulled over, and it doesnt sound like pissed off bee's, if you want id be more then willing to post a sound clip to prove you wrong

 
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http://www.randomtechnology.com/

 
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DC does make stainless steel headers, and they claim it adds 4hp to the wheels. I didn't notice that, but the craftmanship is excellent. I bought it from www.first-1.com. At the time of my research they had the best prices on stainless steel DC headers, 299 bucks.

 
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isn't true the DC cermaic one holds more heat and adds more hp then the stainless steel one but the staniless steel will last longer is that true?

 
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what the hell. At the first-1.com place they post that the ceramic header is 30 bucks more than the stainless for DC???

 
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ceramic is supposely better for heat but can get eaten away by salt after awhile. I drive my car in the winter and I dont want to worry about holes in my pipes after awhile. Plus Stainless looks so much better.

 
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Yes , stainless steel headers are more durable, and , if you get a crack one day, stainless steel will be easier to fix than ceramic....I don't know about the look though, after a while, my stainless steel header became kind of dark brown-grey(whatever that color is).Probably the matter of preference.

 
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I don't care what color it is. I want parts for performance, not so it looks cool under my hood.

Back to my other question, doesn't HP or Kamikaze make a top portion to the header that uses the stock cat that would be legal?

Back to my other question, how much gain would you get from the random technology high flow cat?

Thanks,

IronFist

 
Rep Power: 383

the high flow cat and downpipe just came out, so I dont or i havent heard of any one having installed yet and no numbers have been released, if you want go to their website and give them a call if all you care about is numbers
'

 
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Man it doesn't matter cuz you can spray some high temp paint if you are worried about in case it gets eaten by salt..any color you want, at auto zone.

 
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Of course, if people really CARED about performance they'd be wrapping their header in header wrap anyways....but then you can't see the nice shiny stainless steel...

 
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I think the DC sports one have larger diameter than the stock header. That will give better flow along with the RT cat. RT cat run $300+ dollars. I don't think anyone in this site has it yet so I really dont know how the sound or hp. You can be the first one and then us all about it.

official site

If you only use the top portion of Kam or Hp header. It is street legal but not emission legal. It all depend on your area. Does your area require emission test? If no you should't be worry. The best HP gain is either eliminate the stock cat or use a highflow cat instead.

Like I said b4, street legal and performance don't mix for our cars. If you really care about street legal and gain as much hp as you can, try the dc and rt one. Only way to go but expensive. You can try to net to see if anywhere else sell the RT cat.

 
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some one said the kamizae is street legal, but in Ca what can be done to our cars, without breaking emissions?

 
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what about on the ex? I can get an HP upper section for $50. I still have the stock catalytic converter, so isn't it legal?

 
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i have dc sport header, no cat and 2 1/4 inch pipe of the header to a dual tsudo setup. you wanna talk about loud. my dad hurd me 3 miles away. and i drown out 18 wheelers leaving the redlight. never got pulled over for it but the neighbors hate me