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Old 04-27-2010, 06:15 PM
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top00cat
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Do long tube headers improve or decrease gas mileage? My car already drinks gas and would prefer if it did not get any worse
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Old 04-27-2010, 06:20 PM
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07BLACKGT
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It should free up some gas mileage. Increased flow = Increased economy.
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Old 04-27-2010, 06:25 PM
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808muscle
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Depends...... you might hit the fun pedal more cause it sounds so good!

Patrick
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Old 04-27-2010, 06:33 PM
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Analyzer52
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It's a mustang why is gas mileage on your mind I have never understood this. It's like the people that buy a SUV and then complain about the gas mileage.
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Old 04-27-2010, 06:40 PM
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JasperGT
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Because some people want a mustang but they can only afford one car. Therefore it is probably a daily driver, and you need some decent gas mileage. How is that so hard to understand?

Back to the main topic: I didn't really notice a difference one way or another

Last edited by JasperGT; 04-27-2010 at 06:43 PM.
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Old 04-27-2010, 06:45 PM
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top00cat
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This is in fact the car I drive to work every day. I cant afford to get 12 mpgs.
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Old 04-27-2010, 06:49 PM
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JasperGT
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Originally Posted by top00cat
This is in fact the car I drive to work every day. I cant afford to get 12 mpgs.
Bam! I knew it!

Then again, you have 4.10s and cams, so you can't be too worried about gas I guess...

I'll tell you this. I had ARH 1 5/8" LTs and O/R X with the Borla Stingers, and the trumpeting was too much for me. I switched to Pypes mid-mufflers and the trumpeting is a lot less, but it's still there to a degree. I just hope I don't have to change any part of the exhaust once I get my cams in.

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Old 04-27-2010, 07:00 PM
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top00cat
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Is trumpeting the same as drone? I have pretty bad drone. I avoid certain RPM ranges when I am cruising. The 410s didnt kill my gas mileage too much. My commute consists of alot of city driving so it is easier to get to cruising speeds faster.
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Old 04-27-2010, 07:20 PM
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liberty911
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It's going to be a while to justify a $600-1200 investment in headers (more if you farm out the labor) to make up for any fuel mileage increases. If you get a 2 mpg increase that cost is about 21.4 cents per mile savings at $3 per gallon. If you go with Kooks ($1,200) plus labor ($400) it will take you about 80,000 miles to break even. You would probably make more money by putting the cost of the headers into a CD.

PS, my math sucks, but you get the idea.
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Old 04-27-2010, 07:21 PM
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deekum1627
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i didnt notice a change in my mileage after the LT's
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