Will headers cause check engine light?

Registered. Headers will cause a CEL, yes.
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Will headers throw a check engine light?

Headers and Hi Flow cats will set a check engine light for sure, not instantly but within 80 miles or 3 key cycles normally, easy enough to tune out and remove the light, feel free to ask any questions if you have them sir.
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Do long tube headers make the check engine light come on?

Long tube headers almost always throw the check engine light. If there are any tuners in your area they can just turn the rear O2 sensors off.
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Will long tube headers throw a code?

There is NOT ONE long tube header/hi flow cat design that does NOT throw codes or skew fuel trim measurements to the point of creating problems. This is due to o2 sensor location changes, along with converters that are NOT as efficient as factory cats.
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Do you have to tune an engine after installing headers?

Yes you'll need a tune. My main reason for wanting to wait is $$$ for the tune. I have the headers and am just waiting for the plugs and wires to come before the install.
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Most Common Reasons Your Check Engine Light Is On



How much horsepower does headers add?

So how much hp do long tube headers add? If attached to a stock engine, you can expect about 6-9 hp over a manifold.
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How much does it cost to get headers tuned?

Tunes go for $350 - $500 depending on mods. LT Headers, complete system about $1200-$1600. Tunes go for $350 - $500 depending on mods.
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Should long tube headers be tuned?

Long tube headers constitute as a major change for the exhaust aspiration of your vehicle's engine. To compensate for the added air flow, and the relocation of the oxygen sensors, a new or updated tune is required.
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Do you need to tune your car after headers and exhaust?

And for aftermarket headers, the answer is yes, you should tune your car when installing a new exhaust header. Major performance mods like a header can significantly alter important variables like air/fuel ratio. Tune is required to ensure you get the most out of the header without future problems.
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Do I need to tune after changing exhaust?

As mentioned, a little more information would be helpful. However, if you are replacing your stock exhaust with a cat-back system or something similar, no tune is required. On the other hand, if you are installing headers along with a high flow exhaust, then a tune is probably a good idea.
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Do shorty headers require a tune?

Shorty headers are not enough of an aspiration change to require a tune, unless you are removing the catalytic converters at the same time.
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How long does it take to install headers?

How long does it take it you know what you are doing, have the tools, and with a helper - 2 hrs max. If you are going to a shop - expect to "pay" for at LEAST 3.5 hrs.
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Will long tube headers make car louder?

No. The header will improve the overall sound a little bit, but it won't make it any louder.
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What do headers do?

Headers are designed to route exhaust gases from the engine to the exhaust system but they create less exhaust backpressure than exhaust manifolds, thereby allowing the engine to breathe more easily.
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Are exhaust headers worth it?

In general, a quality set of headers should provide an increase of approximately 10-20 horsepower, and if you're restrained with your right foot, you may even see an increase in fuel mileage.
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Do headers increase mpg?

While more involved from an installation standpoint, headers in combination with a cat-back system will give you a measurable boost in power. In most cases, fuel mileage will remain the same or improve a bit.
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What is better headers or exhaust manifold?

Why are headers are a better choice than an exhaust manifold? As stated above, exhaust manifolds create back pressure, which lowers performance. Because each cylinder of the engine is given its own tube, however, headers eliminate this problem; thus, allowing the gases to exit without the creation of back pressure.
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Are shorty headers louder than long tube?

As for drawbacks? Shorty headers aren't as loud as long tube headers, although they'll definitely have better sound than your stock manifold. You can choose unequal length headers for better sound, but equal length is the way to go for consistent gains in performance.
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Why do headers sound better than manifolds?

Since manifolds are thicker when it comes to absorbing pressure, they also absorb most of the sound from the exhaust. But if you like to step on the gas and hear your engine scream, then you're going to love what headers have to offer.
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Do headers change sound?

The noise will increase some because you are push more air out. I find the tone is usually deeper. yes, and I hope changing to headers and duals from my factory restrictive manifolds and wonderfull 2 into 1 system will give me more than 3% HP increase.
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Can you install headers yourself?

Tubes connected to each cylinder work together in a coordinated effort to ensure your engine reaches peak peformance. It is a labor-intensive job installing one of these to your own car, but installing a performance header is far from impossible. Some mechanical background will be helpful, as will a deep socket wrench.
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Are short tube headers worth it?

If you're driving a turboboosted engine, you will absolutely want shorty headers, but they're also great for a variety of other drivers. If you're looking to increase the performance of a vehicle that's primarily your daily driver or commuter, shorty headers are a good idea.
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