The power of cold air
#1
The power of cold air
Anyone curious how air temp affects engine output? Honestly, the results made me want to find more ways to keep the air temp cooler.
The dyno chart below indicates the results from my most recent tests. The two runs were exactly 3 months apart and around the same time during the day on the same dyno. The results shown below are uncorrected = the numbers you see were the power produced that day to the ground.
Results: the engine produced more power under cooler condition than adding the UR pulleys under warmer condition.
However, the same UR pulleys setup under the same cooler condition should yield higher output (I hope
).
Run 16 - Red
Date: 2/20/06
Time: 12:50pm
Air temp: 43 degrees F
Run 17 - Blue
Date: 5/20/06
Time: 11:54am
Air temp: 64 degrees F
Temp difference since run 16: 21 degrees F
Component added since run 16: UR pulleys
The dyno chart below indicates the results from my most recent tests. The two runs were exactly 3 months apart and around the same time during the day on the same dyno. The results shown below are uncorrected = the numbers you see were the power produced that day to the ground.
Results: the engine produced more power under cooler condition than adding the UR pulleys under warmer condition.
![ugh](https://acurazine.com/forums/images/smilies/ugh.gif)
![Big Grin](https://acurazine.com/forums/images/smilies/biggrin.gif)
Run 16 - Red
Date: 2/20/06
Time: 12:50pm
Air temp: 43 degrees F
Run 17 - Blue
Date: 5/20/06
Time: 11:54am
Air temp: 64 degrees F
Temp difference since run 16: 21 degrees F
Component added since run 16: UR pulleys
![](http://www.tsobad.com/jtso/Images/Pulleys/air%20temp%20compare%202.jpg)
#5
my acura sanctuary
yeah my SV (mc) loves cool days...it really pulls. its the 03 FI motor.
I wonder how much added performance 06s get from icebox? since the new engine specs seems to be optimized. if it's on 5 HP it's not worth it. 10HP would be.
I wonder how much added performance 06s get from icebox? since the new engine specs seems to be optimized. if it's on 5 HP it's not worth it. 10HP would be.
Trending Topics
#9
Originally Posted by kyotousa
do you have your mod list?
- Hondata gasket
- Big bore throttle body with port matched intake manifold and ceramic coating
- K&N CAI
- UR underdrive pulleys
- DC header
- Metal' cat converter (200 cell)
- Tanabe Medalion Touring exhaust
- Coolant bypass
- Oil catch can
#11
Drives With Hands
Very interesting. You're the best person to do this, too, as having one of the most modified NA engines means the difference in warm/cool air performance will be most pronounced; i.e. the more horsepower your engine makes the better testing resolution becomes.
Also, it's no wonder that you noticed such an increase in power: a 21F temperature difference is the rough pressure equivalent of going from sea level to 7700 feet of elevation!
Also, it's no wonder that you noticed such an increase in power: a 21F temperature difference is the rough pressure equivalent of going from sea level to 7700 feet of elevation!
#12
Instructor
Join Date: Dec 2005
Location: TC, Mn
Age: 49
Posts: 211
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by JTso
I'm also trying to implement the 06 TSX front grille cover which has vents to draw outside air to the engine bay. Okay, I'm jealous of the 06 power.
. I don't think it's a direct fit but wonder if it can be done...
2004/2005 cover
![](http://www.acuraautomotiveparts.org/acura/jsp/mws/catimgs/14sea0_b45.gif)
2006 cover
![](http://www.acuraautomotiveparts.org/acura/jsp/mws/catimgs/14sea0_b4501.gif)
![Big Grin](https://acurazine.com/forums/images/smilies/biggrin.gif)
2004/2005 cover
![](http://www.acuraautomotiveparts.org/acura/jsp/mws/catimgs/14sea0_b45.gif)
2006 cover
![](http://www.acuraautomotiveparts.org/acura/jsp/mws/catimgs/14sea0_b4501.gif)
#13
Someone stole "My Garage"
Originally Posted by rmpage
Also, it's no wonder that you noticed such an increase in power: a 21F temperature difference is the rough pressure equivalent of going from sea level to 7700 feet of elevation!
*loves living in cooler climates where I get coolers temps in summer and fall than you suckers in the southern states, LOL*
![Wink](https://acurazine.com/forums/images/smilies/wink.gif)
#15
Senior Moderator
Originally Posted by JTso
- Hondata reflash
- Hondata gasket
- Big bore throttle body with port matched intake manifold and ceramic coating
- K&N CAI
- UR underdrive pulleys
- DC header
- Metal' cat converter (200 cell)
- Tanabe Medalion Touring exhaust
- Coolant bypass
- Oil catch can
- Hondata gasket
- Big bore throttle body with port matched intake manifold and ceramic coating
- K&N CAI
- UR underdrive pulleys
- DC header
- Metal' cat converter (200 cell)
- Tanabe Medalion Touring exhaust
- Coolant bypass
- Oil catch can
![Bow](https://acurazine.com/forums/images/smilies/bow.gif)
I'm so jealous of those dyno's.
#16
Oh, I forgot to mention the Hondata gasket test was done with synthetic oil (first oil change). That might have helped to achieve the 3 hp gain.
The old school of cooling effects:
- coolant = responsible for 70% of cooling effect.
- air = 20% of cooling effect.
- oil (dino) = 10% of cooling effect.
IMO, I believe today's synthetic oil probably contribute a little more cooling effect by further reduces frictions of engine components.
The old school of cooling effects:
- coolant = responsible for 70% of cooling effect.
- air = 20% of cooling effect.
- oil (dino) = 10% of cooling effect.
IMO, I believe today's synthetic oil probably contribute a little more cooling effect by further reduces frictions of engine components.
#21
Originally Posted by WECoyote13
So JT...what did the dyno run look like stock? how far have your mods taken you?
Thanks...
Thanks...
Run 3 was done in 3/27/2004. The biggest gain obviously from the Hondata reflash. I believe run 3 was tested with CAI and possibly header as well. I don't have a bone stock baseline.
![](http://www.tsobad.com/jtso/Images/Pulleys/before%20and%20after%20mod%20compare.jpg)
#22
Skater, Gentleman, Sniper
Join Date: May 2006
Location: Fort Fun, Colorado
Age: 52
Posts: 55
Likes: 0
Received 0 Likes
on
0 Posts
Wow, that's awesome...I just got my '04...a little worried about voiding my extended warranty but can't wait to get started working on the mods...this gives me hope!
On cold air... I can totally feel the difference in my butt...driving this car at night in the cold versus in the day heat.
I'm in Colorado where you lose 15% of your power due to lower air pressure...so I am basically driving a 170hp car unmodified.
On cold air... I can totally feel the difference in my butt...driving this car at night in the cold versus in the day heat.
I'm in Colorado where you lose 15% of your power due to lower air pressure...so I am basically driving a 170hp car unmodified.
#23
Drives With Hands
Do you record IAT during testing or just ambient? I've found that they generally correlate with one another, but not in a strictly linear fashion. I'm just thinking that the reading from the thermistor right before the TB might be a more accurate representation of engine conditions.
The obvious solution to that is a supercharger. How do you think WWII-era piston-driven aircraft made 1200bhp at 32,000 feet?
Originally Posted by WECoyote13
I'm in Colorado where you lose 15% of your power due to lower air pressure...so I am basically driving a 170hp car unmodified.
![Big Grin](https://acurazine.com/forums/images/smilies/biggrin.gif)
#24
Originally Posted by rmpage
Do you record IAT during testing or just ambient? I've found that they generally correlate with one another, but not in a strictly linear fashion. I'm just thinking that the reading from the thermistor right before the TB might be a more accurate representation of engine conditions.
#26
Moderator Alumnus
Join Date: Jul 2003
Location: Windsor-Quebec corridor
Age: 47
Posts: 7,709
Likes: 0
Received 6 Likes
on
4 Posts
Originally Posted by JTso
- Hondata reflash
- Hondata gasket
- Big bore throttle body with port matched intake manifold and ceramic coating
- K&N CAI
- UR underdrive pulleys
- DC header
- Metal' cat converter (200 cell)
- Tanabe Medalion Touring exhaust
- Coolant bypass
- Oil catch can
- Hondata gasket
- Big bore throttle body with port matched intake manifold and ceramic coating
- K&N CAI
- UR underdrive pulleys
- DC header
- Metal' cat converter (200 cell)
- Tanabe Medalion Touring exhaust
- Coolant bypass
- Oil catch can
![2 Cents](https://acurazine.com/forums/images/smilies/2cents.gif)
![2 Cents](https://acurazine.com/forums/images/smilies/2cents.gif)
![Too Cool](https://acurazine.com/forums/images/smilies/toocool.gif)
#29
Someone stole "My Garage"
Originally Posted by TSX420J
In that case Im getting one of these installed..
300.00 at sears 2000 btu that should keep the air at 30 degrees
![](http://img154.imageshack.us/img154/6628/00130dj.jpg)
300.00 at sears 2000 btu that should keep the air at 30 degrees
![](http://img154.imageshack.us/img154/6628/00130dj.jpg)
![Ponder](https://acurazine.com/forums/images/smilies/ponder.gif)
![Wink](https://acurazine.com/forums/images/smilies/wink.gif)
![Tomato](https://acurazine.com/forums/images/smilies/tomato.gif)
#30
Originally Posted by JTso
- Big bore throttle body with port matched intake manifold and ceramic coating
- Metal' cat converter (200 cell)
- Coolant bypass
- Metal' cat converter (200 cell)
- Coolant bypass
like add horsepower, improve your car or something else?
#32
Drives With Hands
Originally Posted by curls
LOL.
Even better, save yourself the $300 and route the cabin A/C lines to the CAI tube to cool the tube and thus the incoming air. ![Wink](https://acurazine.com/forums/images/smilies/wink.gif)
![Tomato](https://acurazine.com/forums/images/smilies/tomato.gif)
![Ponder](https://acurazine.com/forums/images/smilies/ponder.gif)
![Wink](https://acurazine.com/forums/images/smilies/wink.gif)
![Tomato](https://acurazine.com/forums/images/smilies/tomato.gif)
#33
Someone stole "My Garage"
Originally Posted by rmpage
Just pull the fuse for the AC compressor. Doesn't matter much though, the ECU disengages the clutch at WOT anyway.
![Wink](https://acurazine.com/forums/images/smilies/wink.gif)
Thread
Thread Starter
Forum
Replies
Last Post
SidhuSaaB
3G TL Problems & Fixes
18
05-30-2020 12:40 AM
navtool.com
5G TLX Audio, Bluetooth, Electronics & Navigation
31
11-16-2015 08:30 PM
navtool.com
1G RDX Audio, Bluetooth, Electronics & Navigation
1
09-25-2015 05:15 PM