Ambient Temperature Research with Force Induction

COSMO · 07-26-2013, 12:23 PM

After doing much research on ways to cool my TT 370z I thought I might share some findings. For starters I have the app Torque and have set it up to monitor several things on my car and one of them being the air intake temperature. My car is a touring with the sport package and a GTM Stage II TT. After logging and monitoring many trips in my car I noticed the ambient temperature and the air intake temps were right at 10% meaning what ever the outside air was the air intake temp would run 10% hotter. That being said I had an idea of trimming the plastic piece of the front bumper which is about 4 inches total in height so more air could be more effective of the intercooler. Doing that alone made a 5% difference from the ambient temps and the air intake temps. No biggie right..!! Recently I just went went a Vented carbon hood and did more logging and believe it or not my ambient temps are now the exact same is my air intake temps. I started this thread in hopes to helping others that might be looking at ways to cooling their FI z. Will post up pics today of the oem bumper trimming..

phunk · 07-26-2013, 02:18 PM

id be curious to see your pictures.

under what circumstances are you comparing temp? i would expect you to find drastically different percentages pending airflow (speed) and heat soak.

COSMO · 07-26-2013, 07:58 PM

Good question obviously when you come to a stop light or stuck in traffic it will rise due to not getting any air flow. My test were done on the interstate cruising between 65-85. Loook its not rocket science but by opening up the stock bumper and or buying an aftermarket bumper with decent flow to the intercooler goes a long way. I couldn't be more happier with the results in my forced induction z...

COSMO · 07-26-2013, 08:01 PM

Will post up some pics tomorrow.....

Chuck33079 · 07-26-2013, 08:06 PM

I'm glad you're logging this, since I'm always looking for more ways to keep my car cool. Another thing that may be helpful is tracking how long it takes for the IAT to come back down to ambient after sitting still- ie traffic conditions. It's a little late for a baseline though, since you've already cut the bumper and got a vented hood.

Nissanboy · 07-26-2013, 08:13 PM

Now install a nitrous spray bar in front of the intercooler and let us know the results

Chuck33079 · 07-26-2013, 08:29 PM

Quote:

Originally Posted by Nissanboy

Now install a nitrous spray bar in front of the intercooler and let us know the results

The problem with that is the location of the air filters on a GTM kit makes it too easy to suck in some NO2 you're not tuned for.

Nissanboy · 07-26-2013, 08:39 PM

Quote:

Originally Posted by Chuck33079

The problem with that is the location of the air filters on a GTM kit makes it too easy to suck in some NO2 you're not tuned for.

Good point, didn't even think about that.

roplusbee · 07-29-2013, 12:12 AM

Great info. I figured that the vented hood and a larger opening in the bumper would definitely help. The problem for me is finding a hood that is not heavier than stock and finding the right shop to do the bodywork (and it look good instead of hacked up).

COSMO · 07-29-2013, 07:05 AM

Pretty happy with my VIS after having it painted to match the car. Pics will come Today!!!!

Nixlimited · 07-29-2013, 10:46 AM

Quote:

Originally Posted by roplusbee

Great info. I figured that the vented hood and a larger opening in the bumper would definitely help. The problem for me is finding a hood that is not heavier than stock and finding the right shop to do the bodywork (and it look good instead of hacked up).

Yes, because of this, I am considering having vents cut into my stock hood backed by black mesh or something. I also do not like the necessity of hood pins with CF hoods.

theDreamer · 07-29-2013, 10:55 AM

I have been tracking my intake temps lately but never did prior so nothing to compare to.
Once I get a vented hood I am curious to see how it changes, if at all.

Nix, most 370z aftermarket hoods have the 3 lock slots like your OEM hood, so you just transfer them over. Most cars needed them in the past because they just came with a single lock and you needed to add 2 for racing.

COSMO · 07-29-2013, 12:01 PM

As promised a few pics...

Nixlimited · 07-29-2013, 01:41 PM

Looks really nice, Cosmo.

@theDreamer - do you know if the Seibon hoods come that way? I feel like I always see people saying (internet experts?) that you still should run hood pins.

Boosted Performance · 07-29-2013, 01:54 PM

I wouldn't be all that concerned about IAT's at cruise, and would pay a lot more attention to them at WOT. If the system is efficient, you should not be seeing IAT's more than 15% over ambient (at about 10psi of boost). Also, my experience shows that turbine housing flow has a lot more to do with IAT's than the size of the intercooler.

07-26-2013, 12:23 PM	#1 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 19	Ambient Temperature Research with Force Induction After doing much research on ways to cool my TT 370z I thought I might share some findings. For starters I have the app Torque and have set it up to monitor several things on my car and one of them being the air intake temperature. My car is a touring with the sport package and a GTM Stage II TT. After logging and monitoring many trips in my car I noticed the ambient temperature and the air intake temps were right at 10% meaning what ever the outside air was the air intake temp would run 10% hotter. That being said I had an idea of trimming the plastic piece of the front bumper which is about 4 inches total in height so more air could be more effective of the intercooler. Doing that alone made a 5% difference from the ambient temps and the air intake temps. No biggie right..!! Recently I just went went a Vented carbon hood and did more logging and believe it or not my ambient temps are now the exact same is my air intake temps. I started this thread in hopes to helping others that might be looking at ways to cooling their FI z. Will post up pics today of the oem bumper trimming.. DIGItonium, Legz, Infiniti370z and 1 others like this.

07-26-2013, 02:18 PM	#2 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	id be curious to see your pictures. under what circumstances are you comparing temp? i would expect you to find drastically different percentages pending airflow (speed) and heat soak. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

07-26-2013, 07:58 PM	#3 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 19	Good question obviously when you come to a stop light or stuck in traffic it will rise due to not getting any air flow. My test were done on the interstate cruising between 65-85. Loook its not rocket science but by opening up the stock bumper and or buying an aftermarket bumper with decent flow to the intercooler goes a long way. I couldn't be more happier with the results in my forced induction z... Legz likes this. Last edited by COSMO; 07-26-2013 at 09:35 PM.

07-26-2013, 08:01 PM	#4 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 19	Will post up some pics tomorrow..... Legz likes this.

07-26-2013, 08:06 PM	#5 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	I'm glad you're logging this, since I'm always looking for more ways to keep my car cool. Another thing that may be helpful is tracking how long it takes for the IAT to come back down to ambient after sitting still- ie traffic conditions. It's a little late for a baseline though, since you've already cut the bumper and got a vented hood. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

07-26-2013, 08:13 PM	#6 (permalink)
Nissanboy Enthusiast Member Join Date: Dec 2010 Location: H-Town Posts: 378 Drives: Too slow Rep Power: 14	Now install a nitrous spray bar in front of the intercooler and let us know the results elperuano likes this.

07-29-2013, 12:12 AM	#9 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 22	Great info. I figured that the vented hood and a larger opening in the bumper would definitely help. The problem for me is finding a hood that is not heavier than stock and finding the right shop to do the bodywork (and it look good instead of hacked up). __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

07-29-2013, 07:05 AM	#10 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 19	Pretty happy with my VIS after having it painted to match the car. Pics will come Today!!!!

07-29-2013, 10:55 AM	#12 (permalink)
theDreamer A True Z Fanatic Join Date: Feb 2009 Location: Texas Posts: 30,879 Drives: 370z Rep Power: 4210	I have been tracking my intake temps lately but never did prior so nothing to compare to. Once I get a vented hood I am curious to see how it changes, if at all. Nix, most 370z aftermarket hoods have the 3 lock slots like your OEM hood, so you just transfer them over. Most cars needed them in the past because they just came with a single lock and you needed to add 2 for racing. __________________ theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN theDreamer's Silvia // URAS // GREDDY Houston Zs // Facebook // Twitter // Instagram

07-29-2013, 01:41 PM	#14 (permalink)
Nixlimited A True Z Fanatic Join Date: Aug 2009 Location: San Diego Posts: 1,235 Drives: 15 GT-R / 11 Prius Rep Power: 25	Looks really nice, Cosmo. @theDreamer - do you know if the Seibon hoods come that way? I feel like I always see people saying (internet experts?) that you still should run hood pins. __________________ Car Sold! Pleasure being a part of the Z community. New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

07-29-2013, 01:54 PM	#15 (permalink)
Boosted Performance The370Z.com Sponsor Join Date: Feb 2010 Location: Edmonton, AB Posts: 1,629 Drives: Z's Rep Power: 3382	I wouldn't be all that concerned about IAT's at cruise, and would pay a lot more attention to them at WOT. If the system is efficient, you should not be seeing IAT's more than 15% over ambient (at about 10psi of boost). Also, my experience shows that turbine housing flow has a lot more to do with IAT's than the size of the intercooler. __________________ 750WHP starting @ $7,500 to the door FOR DETAILS VISIT: http://www.the370z.com/members/boosted-performance.html FB: https://www.facebook.com/Boosted-Per...6303179791462/ IG @boostedperformanceyeg

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Ambient Temperature Sensor Screwy	OldGuy	Engine & Drivetrain	4	10-09-2012 03:49 AM
Help!! Ambient Light	peaman427	DIY Section (Do-It-Yourself)	1	03-06-2012 09:52 PM
GTM force induction or not?	Ricardo2.0	Forced Induction	32	09-30-2011 11:22 AM
Survey from Maritz Research...	PapoZalsa	The Lounge (Off Topic)	0	03-16-2010 06:24 PM
Scam? Research from Cali?	Justin1686	Nissan 370Z General Discussions	4	03-13-2010 11:56 AM