Swapping headers: increase or decrease in fuel economy?

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May 30, 2006 | 06:49 PM

White_LightningZ

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Swapping headers: increase or decrease in fuel economy?

My brother is thinking of getting headers but heard they lower mpg a lot even with a tune.

I was wondering whether that is specific to long tubes or all headers? or emissions/no emissions.

Opinions please. Let me know if you had an increase/decrease in mpg after install and what kind of headers.

May 30, 2006 | 08:30 PM

WannaZ28

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think of it like this: long tubes will give you power upper end, shorties are great for low end power (most of the rpm range you will cruise)

May 30, 2006 | 09:23 PM

Jditlfm

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i gained 2 mpg when i did long tubes and a ory, and alot of performance picked up 4mph in the 1/4

May 30, 2006 | 10:28 PM

96_TA

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Quote:

Originally Posted by WannaZ28

think of it like this: long tubes will give you power upper end, shorties are great for low end power (most of the rpm range you will cruise)

I thought long tubes gave more power in the low end and short tubes give more in the med/high end?

Mike

May 30, 2006 | 11:08 PM

Chaotic Firebird

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Your foot is what causes the decrease in mpg

May 30, 2006 | 11:57 PM

TAEnvy

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From: DFW

Ive always been told that LTs increase gas mileage because the exhaust will be Pulled from the combustion chamber due to the design of the headers therefore increasing mileage.

May 31, 2006 | 12:00 AM

Muerte_X

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It's less restriction, allowing your engine to do it's job easier. So you will have better fuel economy, problem is, staying off the fast pedal and enjoying that extra power.