Intake Air Temperatures

jpit · 07-11-2009, 10:10 PM

For those of you who put on new intakes, did you take any IAT readings before and after the intallation? The reason I ask is that I just completed The Modshack Fang Vent Modification and the intake air temp averages about
5 to 9 degrees above the ambient temp. This seems pretty respectable and am curious what others are seeing.

ZKindaGuy · 07-12-2009, 12:22 AM

Quote:

Originally Posted by jpit

For those of you who put on new intakes, did you take any IAT readings before and after the intallation? The reason I ask is that I just completed The Modshack Fang Vent Modification and the intake air temp averages about
5 to 9 degrees above the ambient temp. This seems pretty respectable and am curious what others are seeing.

What you are seeing is certainly what I have seen in most cars employing a CAI-type package. The best I ever achieved was on a Shelby Mustang which averaged 2 to 3 degrees above ambient temperature. Everything else was 4 to 8 degrees average.

Modshack · 07-12-2009, 06:19 PM

Quote:

Originally Posted by jpit

For those of you who put on new intakes, did you take any IAT readings before and after the intallation? The reason I ask is that I just completed The Modshack Fang Vent Modification and the intake air temp averages about
5 to 9 degrees above the ambient temp. This seems pretty respectable and am curious what others are seeing.

Yup..What you are seeing is very close to the results I got. My intakes are not sealed to the Fang vent tubes, but IAT's cool down much faster from underhood soak and generally run 6-10 degrees above ambient. If I were to seal the intakes to the inlets (or had stock air boxes) I suspect that number would be even lower.

With the vents, it's amazing to see how 150 degree+ temps dissipate so quickly after a red light heat soak...!

Not too many guys here have the abilty to measure IAT's so I don't suspect you'll get much response.

Cooler is better...

DIY on the vents is here: http://www.the370z.com/diy-section-d...ur-airbox.html

wstar · 07-13-2009, 10:44 AM

Some more data over here: Intake air temp data (Stillen Gen 3, need stock)

I haven't retested since installing my oil cooler, but I suspect the IAT's will have risen from the heat coming off the oil cooler right under the passenger-side Stillen Gen 3 filter. Pretty soon I'm going to order up some hose and flanges from Modshack's setup and see what I can make work for the Gen3. I'm actually considering the shop-vac ends (like he used for intakes for his brake cooling on pics of another car) at the top of the hose run to dump cold air over the Gen 3 filters.

370zForever · 02-23-2010, 09:54 PM

Quote:

Originally Posted by Modshack

Yup..What you are seeing is very close to the results I got. My intakes are not sealed to the Fang vent tubes, but IAT's cool down much faster from underhood soak and generally run 6-10 degrees above ambient. If I were to seal the intakes to the inlets (or had stock air boxes) I suspect that number would be even lower.

With the vents, it's amazing to see how 150 degree+ temps dissipate so quickly after a red light heat soak...!

Not too many guys here have the abilty to measure IAT's so I don't suspect you'll get much response.

Cooler is better...

DIY on the vents is here: http://www.the370z.com/diy-section-d...ur-airbox.html

Modshack, is there anyway to do your set up with the G3 Intake cause the intakes run right through the place where you put the hoses?

cotizi · 02-23-2010, 10:48 PM

i have the G3's with added intake ducting. My scangauge gets here tomorrow so ill be able to start getting readings.

KEVTEX · 02-23-2010, 10:57 PM

I monitor my IAT's all the time. Mine run 6 to 8 degrees above ambient when cruising. I have stock intake boxes, Cobb silicone tubes, the fangs opened up and no ducting. The stock configuration is essentially a CAI.

Zsteve · 02-23-2010, 11:02 PM

Quote:

Originally Posted by KEVTEX

I monitor my IAT's all the time. Mine run 6 to 8 degrees above ambient when cruising. I have stock intake boxes, Cobb silicone tubes, the fangs opened up and no ducting. The stock configuration is essentially a CAI.

I totally agree, with the Mod DIY and K&N drop ins your getting the same as aftermarket CAIs for alot less

JB1 · 02-23-2010, 11:33 PM

Quote:

Originally Posted by KEVTEX

I monitor my IAT's all the time. Mine run 6 to 8 degrees above ambient when cruising. I have stock intake boxes, Cobb silicone tubes, the fangs opened up and no ducting. The stock configuration is essentially a CAI.

I have the same IAT's with just the stock intakes, no silicone tubes or open fangs.

I have reported on intake temps in another thread as well:

Takeda intakes and Scangauge info

Last post I made in this thread was on IAT's with stock intakes:

Quote:

Originally Posted by JB1

So I took the Takedas out and put the stock intakes back in. With ambient temperatures currently being in the high 20's to low 30's, the intake air temperatures are at a fairly steady 6 to 8 degrees above ambient. So this translates to about 10 to 15 degrees lower then what I got with the Takeda intakes. Note: this of course with air moving, so driving at over 35/40 MPH

BTW, Takeda intakes are for sale, see the Private classifieds section if you're interested

Matt · 02-24-2010, 02:44 AM

Quote:

Originally Posted by Zsteve

I totally agree, with the Mod DIY and K&N drop ins your getting the same as aftermarket CAIs for alot less

This confuses me, Steve. Your drop-ins just replace the oem filter, right? The stock intakes boxes are still there, which should negate Modshack's DIY, as the air is already being "pulled" from the outside, as opposed to what aftermarket CAI's (long and short) are doing.

I was going to look more into this DIY, but decided against it since I'm sticking with the stock intake, and it appears it would be for nothing. Correct me if I'm wrong though!

jpit · 02-24-2010, 02:56 AM

The stock intake gets its air from under the bumper cover. But when you install the Modshack vent it is getting cool, forced-fed air through the newly created opening in the bumper cover.

Zsteve · 02-24-2010, 01:15 PM

Quote:

Originally Posted by jpit

The stock intake gets its air from under the bumper cover. But when you install the Modshack vent it is getting cool, forced-fed air through the newly created opening in the bumper cover.

correct and the tubes are being directly aimed at the opening to the stock air boxes, it might even hook right to it, Im not sure I am waiting from Modshack to verify this. But the stock intakes are a CAI and by adding the tubes you are getting forced cool air directly to them and the K&N filters allow more air to flow thru them than stock filters.

280z/300zx · 02-24-2010, 02:03 PM

Quote:

Originally Posted by KEVTEX

I monitor my IAT's all the time. Mine run 6 to 8 degrees above ambient when cruising. I have stock intake boxes, Cobb silicone tubes, the fangs opened up and no ducting. The stock configuration is essentially a CAI.

Can we see pics of this setup. I was thinking of doing the same as I don't want to mess with changing the whole intake. thanks

Zsteve · 02-24-2010, 02:47 PM

Quote:

Originally Posted by 280z/300zx

Can we see pics of this setup. I was thinking of doing the same as I don't want to mess with changing the whole intake. thanks

go to the DIY section and look for Modshacks air vent diy, its a good complete job.

Modshack · 02-24-2010, 04:04 PM

Quote:

Originally Posted by 370zForever

Modshack, is there anyway to do your set up with the G3 Intake cause the intakes run right through the place where you put the hoses?

Sure...Just route the hoses toward the center where the G3 filters reside. YOu can use flanges there to hold the hoses..Attach to the bumper with a simple "L" bracket and point at the filters..

Quote:

Originally Posted by Zsteve

correct and the tubes are being directly aimed at the opening to the stock air boxes, it might even hook right to it, Im not sure I am waiting from Modshack to verify this. .

If you put the flanges on you are creating a direct feed from the Fang area. Seems the best way, but others have just poked the hose in there.. Since the Airboxes are sealed to this pass through it should work very well, but I suspect that 6-10 degrees over ambient is about the best we'll get since the MAF based temp sensors are actually in the engine bay..

07-11-2009, 10:10 PM	#1 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	Intake Air Temperatures For those of you who put on new intakes, did you take any IAT readings before and after the intallation? The reason I ask is that I just completed The Modshack Fang Vent Modification and the intake air temp averages about 5 to 9 degrees above the ambient temp. This seems pretty respectable and am curious what others are seeing.

07-13-2009, 10:44 AM	#4 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	Some more data over here: Intake air temp data (Stillen Gen 3, need stock) I haven't retested since installing my oil cooler, but I suspect the IAT's will have risen from the heat coming off the oil cooler right under the passenger-side Stillen Gen 3 filter. Pretty soon I'm going to order up some hose and flanges from Modshack's setup and see what I can make work for the Gen3. I'm actually considering the shop-vac ends (like he used for intakes for his brake cooling on pics of another car) at the top of the hose run to dump cold air over the Gen 3 filters. __________________ 7AT Track Car! Journal thread / Car setup details

02-23-2010, 10:48 PM	#6 (permalink)
cotizi Enthusiast Member Join Date: Mar 2009 Location: Austin, Tx Posts: 391 Drives: 2012 VW GTI 6MT Rep Power: 217	i have the G3's with added intake ducting. My scangauge gets here tomorrow so ill be able to start getting readings. __________________ Past - 2009 Silver 6MT Sport 370Z Current - 2012 VW GTI 6-Speed

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02-23-2010, 10:57 PM	#7 (permalink)
KEVTEX Base Member Join Date: Nov 2009 Location: Montgomery, TX Posts: 119 Drives: 2010 370Z 7at sp pg Rep Power: 16	I monitor my IAT's all the time. Mine run 6 to 8 degrees above ambient when cruising. I have stock intake boxes, Cobb silicone tubes, the fangs opened up and no ducting. The stock configuration is essentially a CAI.

02-24-2010, 02:56 AM	#11 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	The stock intake gets its air from under the bumper cover. But when you install the Modshack vent it is getting cool, forced-fed air through the newly created opening in the bumper cover.