hp gain w/AEM cold air intake for g35 coupe

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Dec 6, 2009 | 03:43 PM
  #1  
I installed an AEM cold air intake and i want to know how much horsepower do you gain when you install an aem cold air intake??? i have tried to find it and i can't.

thanks!!!
Reply 0
Dec 7, 2009 | 12:44 PM
  #2  
Simple engineering calculations!
Each 11F air temp drop increases density by 1%, so measure the air flow temperature before and after a change to se how much you gained.

Air flow restiction can be easily measured with a manometer attached just in front of MAF. The absolute aymospheric pressure is 407 inches of water column at sealevel [29.92" HG].

Normal oem intake and air filter have ~~ 6-7" H2O of restriction as measured in front of MAF. So measure before and after. So a 4" improvement at peak rpm [4/27.7 = 0.1444 x 0.68 = ~ 1% improvement].

3 HP maximum improvement +- any temperature change improvement.

Most after market system actually increase temperature [measured at highway speed] so measuring temp is a must.
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Dec 7, 2009 | 02:26 PM
  #3  
About 0hp, maybe a little less, especially when the car is at a stop ingesting all the hot stagnent air from the bumper area just as Q45Tech stated. Research is your friend on this site. You could have saved yourself a few hundred bucks and gone with mods that actually make the power advertized.
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Dec 7, 2009 | 02:44 PM
  #4  
Quote: Simple engineering calculations!
Each 11F air temp drop increases density by 1%, so measure the air flow temperature before and after a change to se how much you gained.

Air flow restiction can be easily measured with a manometer attached just in front of MAF. The absolute aymospheric pressure is 407 inches of water column at sealevel [29.92" HG].

Normal oem intake and air filter have ~~ 6-7" H2O of restriction as measured in front of MAF. So measure before and after. So a 4" improvement at peak rpm [4/27.7 = 0.1444 x 0.68 = ~ 1% improvement].

3 HP maximum improvement +- any temperature change improvement.

Most after market system actually increase temperature [measured at highway speed] so measuring temp is a must.
lol
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Dec 7, 2009 | 05:13 PM
  #5  
Pretty much any intake you get your going to get different answers.
I have a AEM CAI and I love it for the sound and maybe it gains veryyyyyyyy little hp at high rpms but basically no gain
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Dec 7, 2009 | 05:49 PM
  #6  
if you add the sticker that comes with it... at least 40hp!
Reply 1
Dec 7, 2009 | 05:58 PM
  #7  
^lol meany
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Dec 7, 2009 | 06:04 PM
  #8  
with CAI and plenum spacer my automatic G35 dynoed at 242ph

That is about what a stock 350Z gets without any mods.

so I say that with intake and spacer you release additional 10 or so hp.

Mostly you get just the sound tho.
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Apr 1, 2013 | 04:23 PM
  #9  
Quote: 9-10hp
Why would you bump a 4 year old post to give a (incorrect) answer? For one, there is no purpose to bump it. Oh yea, and not to mention you are completely wrong, intakes dont give our car anywhere near 9-10hp lol...
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Apr 1, 2013 | 05:40 PM
  #10  
maybe he meant 9-10 decibels
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