Are Headers Worth The Performance Improvement? - ModernCamaro.com - 5th Generation Camaro Enthusiasts
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post #1 of 4 Old 08-21-2015, 07:26 AM Thread Starter
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Are Headers Worth The Performance Improvement?

Let's talk about headers. Find out how do they work, why do you need the one installed on your car, what types of headers are available on the market,

which materials are used. Find the answers on these and many other questions in our new article: http://www.carid.com/articles/are-he...provement.html



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post #2 of 4 Old 08-23-2015, 06:53 AM
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Thanks for the article ... for me it was a good rundown on the basic concepts, I liked it, since it has been along time since I was interested in these types of things in a car. I do have a couple of questions ... in the article, it says "If you've got a late model American V8 performance car, we offer street-legal ...." ... what is it that makes a set of headers legal or illegal? I'm guessing this is a different answer for each state, so I am interested in Virginia and North Carolina. Second, how do high flow cats come into the equation? In VA I am required to have cats. I assume hi-flow cats are just another factor in freeing up the air flow, but how do they compare to normal cats? Is there also a legal factor in these? Thanks and I'll be looking forward to other articles like these, especially related to suspension.

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post #3 of 4 Old 08-23-2015, 01:29 PM
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good articles !


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post #4 of 4 Old 08-24-2015, 07:31 AM
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Hokie- There's a lot of things that determine if a Header is "Legal" or not. For the most part, you have two types of Headers; Off-Road and 50-State Legal or Emissions Style.

What's the difference you ask? If you buy an Off-Road Header, it will not come with all the emissions bungs that are required from the Factory. The most it will have is a bung for the O2 Sensor and possibly a bung for a Wide-Band that is used for tuning. For example- the 98-01 Z/28 & SS Camaro's had two emission systems; EGR and the AIR-System. The 02 V8's only had the AIR-System, they did not come with any type of EGR. So, if you bought the "Off-Road" LT Header, it would delete all those, thus making your car illegal in certain states that require it.

As for High-Flow Cats, it's really simple- it comes down to cost and if you want to the smell of unburnt fuel. In all honesty, high flow cats don't rob that much power on the dyno, possibly 5 hp at best. But what they do is- eliminate any fuel odor and they quite the exhaust down. They help eliminate the "Rasp" sound that a lot of cars get when they install headers, especially on systems that have a Y-Pipe. High flow cats will also have a place for your rear O2 Sensors to plug into; however, a lot of people, myself included, will have those tuned out. In all honesty, you only need your 2 upstream O2 Sensors.

I hope that helps clear things up....
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