GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

Any MPG pick up after headers installed??

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Old Sep 1, 2011 | 01:31 AM
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Default Any MPG pick up after headers installed??

I have headers on the way and was wondering if any of u guys could tell if the headers helped any on mpg. I travel alot and was hoping for a little gain, let me know ur results/opinions....
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Old Sep 1, 2011 | 04:30 AM
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with a retune you should notice a slight increase if u stay outta the pedal
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Old Sep 1, 2011 | 06:25 AM
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I didnt see any.. More less lost a mpg or two..
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Old Sep 1, 2011 | 08:46 PM
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how about the performance side of it?
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Old Sep 1, 2011 | 09:06 PM
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Originally Posted by blackvmax07
how about the performance side of it?
Seat of the pants picked up a good amout of power.. You will definatly gain HP and you will be very happy after your first test drive after putting them on
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Old Sep 1, 2011 | 09:06 PM
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He'll no... No type of mpg gains
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Old Sep 1, 2011 | 09:22 PM
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Originally Posted by 2007chevy5.3l
Seat of the pants picked up a good amout of power.. You will definatly gain HP and you will be very happy after your first test drive after putting them on
sweet deal, thats goin in after my 3200 stall
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Old Sep 2, 2011 | 05:17 PM
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uhhhhhh.....no on mpg rising.......yes on HP
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Old Sep 2, 2011 | 05:19 PM
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after you retune it and get the afr setup you should pick up 1-2 if you can stay out of the throttle, and yes lt headers give you a good performance gain.
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Old Sep 2, 2011 | 05:55 PM
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Originally Posted by dlt76028
after you retune it and get the afr setup you should pick up 1-2 if you can stay out of the throttle, and yes lt headers give you a good performance gain.
That's what I was hoping for on the high end anyways! The "staying out of it" is the hard part!

Last edited by 8UALIVE; Sep 3, 2011 at 09:52 AM.
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