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Engine & DrivetrainDiscussions about the engine and drivetrain of your vehicle.
This is a discussion thread titled "Gas mileage after installed JBA header.", within the Engine & Drivetrain forum, part of the Technical & Vehicle Assistance Forums category.
For those who installed header, any change in gas mileage?
I have about 900 miles on mine and have not seen a +/- change in my MPG.
The extra low and mid-range power is great and that's why I got them.
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Thunder Gray Metallic
2002 REGULAR CAB - LONG BED - 4WD - V8 - SR5
TRD / Kazuma LSD made by EATON
Bilstein HD shocks
Michelin 8 ply E series radials
JBA headers
Hellwig rear bar
Line-X over the rail
2005 tail lights
OEM Door Sill protectors
TRD Off-Road front coil springs
Color matched LEER Hi-Top cap
Wet Okole Sport Seat Covers
Tinted Windows
OEM Rubber Bed Mat
OEM All-Weather mats
OEM Towing Package with Remote Transmission Cooler
Aside from going down for a short while due to a strange temporary increase in the mass of my right foot after install, I haven't noticed much change otherwise.
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Genthar
Rhino Lining, Waag one piece grille guard and wheel to wheel nerf bars, 3M Xpel on headlights, front corner lights, and foglights, Valentine One radar detector, XM Satellite radio, Navigon 7100 GPS, Lightforce 240 Blitz aux lights, Aux. reverse lights.
AEM Brute force intake, courtesy of AEM Power and TundraSolutions.com
Teamwest Coilovers, Camburg Upper A arms, Daystar Steering Rack Bushings, Total Chaos Diff Drop spacer, JBA Headers, Y-Pipe, and EVOL exhaust.
My mileage seems to have gone up just a bit. I went from getting 295-300 miles before the fuel light went on to about 320 in the same driving everyday. That would be about 1 mpg. So I'm up to about 14.5 mpg. Sweeet. It could also be that immediatly after putting the headers on I went on a 3,000 mile trip with a 4,000 lb trailer. That may have helped finish the break-in process - so it may not be the headers after all.
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2000 4x4 LTD AC Sunfire Red - Sold w/ 200K
2005 4x4 LTD AC Phantom grey w/ dark grey - Sold w/ 20K
Alpine CDA-9835, W/ KCA-420i, Focal 165KP front, Focal 165V Rear speakers. powered by 2 MMats SQ2150 amps. Alpine MRD-M501 powering a JL Stealthbox with Infinity Perfect 10D VQ
Sound deadened everything with Cascade VB2HD, and Dynamat Extreme
2005 G35 Sedan 6MT - Returned due to paint work on a 'new' car.
2006 G35 Sedan 6MT - all stock. Where do I hook up the trailer and where's the bass?
My mileage seems to have gone up just a bit. I went from getting 295-300 miles before the fuel light went on to about 320 in the same driving everyday. That would be about 1 mpg. So I'm up to about 14.5 mpg. Sweeet. It could also be that immediatly after putting the headers on I went on a 3,000 mile trip with a 4,000 lb trailer. That may have helped finish the break-in process - so it may not be the headers after all.
My mileage has gone up a little from 12mpg city to about 15mpg but the latter was a combo city highway driving I still have the check engine light on so after I get the O2 sensor replaced I'm hopefull that the mpg will be better yet
hirschg
Mine might have gone up a little bit. I put the headers on and the next week, put on an AEM brute force intake. Between the two, I can't not hit the gas because it sounds so cool and has more pep. I'm sure it helped with mileage some but I haven't been able to tell that much. It sure sounds and feels better though.
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Gas mileage after installed JBA header.
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