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hp gain w/AEM cold air intake for g35 coupe

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Old 12-06-2009, 04:43 PM
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hp gain w/AEM cold air intake for g35 coupe

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!!!
Old 12-07-2009, 01:44 PM
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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.
Old 12-07-2009, 03:26 PM
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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.
Old 12-07-2009, 03:44 PM
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Quote:
Originally Posted by Q45tech View Post
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
Old 12-07-2009, 06:13 PM
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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
Old 12-07-2009, 06:49 PM
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if you add the sticker that comes with it... at least 40hp!
Old 12-07-2009, 06:58 PM
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^lol meany
Old 12-07-2009, 07:04 PM
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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.
Old 04-01-2013, 05:23 PM
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Quote:
Originally Posted by Koohsky View Post
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...
Old 04-01-2013, 06:40 PM
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maybe he meant 9-10 decibels

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2005, aem, air, cold, coupe, g35, gain, gains, horsepower, hp, infiniti, intake, plenum, reviews, spacer, systems
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