More airflow to intakes

synolimit · 05-19-2013, 05:22 PM

Quote:

Originally Posted by SouthArk370Z

+1. The MAF measures, as its name implies, mass flow, not velocity or volume. As long as you are within the operating range of the sensor, pressure and velocity at the sensor are not important. If you increase the system pressure (eg, ram air) the velocity will actually decrease to get the same mass of air into the engine (the air is more dense so it takes less volume to get the same mass).

Sensor location can make a difference due to turbulence.

The setup in the OP is not a ram air but an "enhanced" CAI. For it to be a true ram air, it would have to have the filters enclosed and sealed within the new duct work.

Actually it will measure velocity, volume and flow of air in a way. A turbo'd car will max out MAF sensors if they are installed in to small of a diameter tube. To small, the volume of space isn't enough and the volts increase maxing out the sensor and tuning cannot be completed or compensate for the change above 5.0v. The velocity of the air filling up a small tube to fast again will max out the sensor and tuning will hault. Yes in the end its still mass flow but factors effect flow.

Density has nothing to do with ram air. It has to do with heat. Hotter air is less desnse. Ram air at ambient temp is still the same temp as ambient air in a closed space as long as heat soak is kept at bay. The amount of air molicules entering the engine will be the same. However a ram air will cause the senser to increase fuel which is we're the bogging and hesitation come from since wind is never going to be the same driving down the road, for example a semi blowing past you rocking your car.

synolimit · 05-19-2013, 05:10 PM

Quote:

Originally Posted by Megan370z

the MAF sensor does NOT expect anything related to any speed.

It is just a sensor that detect airflow by the mean of a heated wire.
if a wind blow too much on it , yeah that will cool down the heated wire which send a signal that is received by the ECU then adjust the AFR.

depending on the intake bent and location of the MAF sensor, yeah it might not be good at certain occasion.

You read to far into that. At 50mph more air will be sucked in than say 10mph. i was only using speed to make it simple instead of saying increased MAF volts at higher speeds or air sucking, which people might not have gotten.

Baer383 · 05-19-2013, 05:49 PM

Quote:

Originally Posted by V8Killer

Just playing devils advocate but in a full frontal collision by removing that foam would that hurt you on a insurance claim for modifying the structure of the vehicle?

No it won't when the insurance adjustors look at cars they never look at them that close and most of them don't know what they are looking at anyway.

axmea? · 05-19-2013, 02:07 PM

I like where you are going but think it was not necessary. Your getting enough CA already. Find a way to filter off any debris that will end up on your filters like a mesh screen. More susceptible to bugs, rocks, cig butts, paper, etc. Also try to figure out how to protect from hydrolock when it rains.

As for your insurance issues, the body shops will be able to tell if it was modded or altered they've done so many of these to tell the difference. The question is will they tell on you.

MJB · 05-19-2013, 02:46 PM

Quote:

Originally Posted by axmea?

I like where you are going but think it was not necessary.

You are probably right. Like I said, this may add 1 or 2hp, if any. I just noticed the foam absorber limited the amount of air to the filters. Maybe its different on a non Nismo Z. I just think Nissan did a really poor job with the aerodynamics and airflow to the engine, brakes, differential, ect.

05-19-2013, 02:07 PM	#4 (permalink)
axmea? A True Z Fanatic Join Date: Apr 2012 Location: SoCal Posts: 6,243 Drives: WELL ZED PW 6MT Rep Power: 53243	I like where you are going but think it was not necessary. Your getting enough CA already. Find a way to filter off any debris that will end up on your filters like a mesh screen. More susceptible to bugs, rocks, cig butts, paper, etc. Also try to figure out how to protect from hydrolock when it rains. As for your insurance issues, the body shops will be able to tell if it was modded or altered they've done so many of these to tell the difference. The question is will they tell on you. Gibby1113 likes this. __________________ >MyZ's Album< NISMO Convert/ECUTEK/Takeda CAI/F.I. HFC NR CB Carbon/F.I. 34 Row Oil Cooler/4.08 Final Drive /Powertrix+Swifts/Hotchkis/SPL/Whiteline/TWM/Zoom Engineering/EVO-R/AeroJacket Vented CF Fenders + CF Spoiler/Avant Garde-WORK/NST/Morimoto Halo/STi Clear Lenses/Carbon Signal Automotive/RJM Performance/ZSpeed Clutch Flywheel CSC delete

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