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drilled the holes in the intake box

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Old Jul 20, 2011 | 01:41 PM
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Thumbs up drilled the holes in the intake box

hey so i saw that someone was going to drill or did drill holes in the intake box. so i went out that same day and did it myself. i went from an avg 22.1 mpg to 23.1 and this is based of a one week avg. no other mods were done at that time .. no loss of hp either feel a little stronger actually so thanks.. luv it..

i have a
2006
lexus is250 awd
with stock 18s
no other mods to engine all stock..
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Old Jul 20, 2011 | 01:46 PM
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What? Seriously? Can anyone confirm?
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Old Jul 20, 2011 | 01:48 PM
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pics?!?!?!?!?
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Old Jul 20, 2011 | 01:50 PM
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Originally Posted by abraham198
hey so i saw that someone was going to drill or did drill holes in the intake box. so i went out that same day and did it myself. i went from an avg 22.1 mpg to 23.1 and this is based of a one week avg. no other mods were done at that time .. no loss of hp either feel a little stronger actually so thanks.. luv it..

i have a
2006
lexus is250 awd
with stock 18s
no other mods to engine all stock..

One has nothing to do with the other. Adding holes to a box that already supplies more air than the engine can use at WOT, especially adding them before the filter and MAF, can't have any impact on your mileage.

Weather, traffic, and a number of other factors all unrelated to the holes in your airbox can impact mileage though.
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Old Jul 20, 2011 | 01:51 PM
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There are so many factors that go into how your MPG is calculated (ie. air temp, driving style) that I doubt drilling holes into your intake had that much affect on that reading. Also, you'd have to have driven the exact same way, same roads, etc. for an accurate comparison.

Last edited by Thinktwice; Jul 20, 2011 at 01:55 PM.
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Old Jul 20, 2011 | 02:19 PM
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^ Two answers above me sum it up. The hole's probably have nothing to do with it.
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Old Jul 20, 2011 | 05:22 PM
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Let us know if you consistently stay at around 23.1...
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Old Jul 20, 2011 | 05:26 PM
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23mpg is still horrible for a 250.
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Old Jul 20, 2011 | 05:29 PM
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Intake holes are 3-4hp on the butt dyno. LOL!

No really, it only adds a little "grunt" sound if anything when you mash the gas.
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Old Jul 20, 2011 | 05:29 PM
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holes give it sound. yea 23 is horrible lol. quit flooring it to hear the sound =P
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Old Jul 20, 2011 | 05:31 PM
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Originally Posted by DigitalDon
23mpg is still horrible for a 250.
Haha this is really the only insight to be gained from this thread. I get far better gas mileage in my 350.

Holes had nothing to do with the perceived gas mileage increase.
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Old Jul 20, 2011 | 05:34 PM
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I get on average 25 mpg in my car with fairly aggressive driving. How is 23 good?
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Old Jul 20, 2011 | 05:53 PM
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well guys i did not do any other mods to the car and during the week i pretty much have the same route .. home to work and work to home and well ill take pictures post later. the only other time that the avg mpg went up and that was only a tad bit was when i installed the hks exhaust system .. so weather it was the holes or not my mpg went up lol .. im liking it ...
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Old Jul 20, 2011 | 05:54 PM
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btw i use to get aroung 20 to 21 mpg.. so an increace to 23.1 is a plus for me ..i drive up and down mountians. :/ sucks..

and the sound. well didnt notice much of a diff. its almost the same so no sound diff. ..

ill try to post a pic later on today and ill come back after a week and let you know if it keeps the same mpg. i hope it does.. haha



(BTW im still learning how to use this site so if i do something wrong please help out by advising me thanks)

Last edited by abraham198; Jul 20, 2011 at 06:00 PM.
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Old Jul 20, 2011 | 06:02 PM
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Serously doubt the holes gave you better MPG. 23 mpg is not so bad if you don't do much freeway driving
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