2.4L Performance Tech 16 valve 172 hp EcoTec with 162 lb-ft of torque

Airaid question

Thread Tools
 
Search this Thread
 
Old Oct 8, 2009 | 09:46 AM
  #11  
RaineMan's Avatar
Senior Member
 
Joined: 09-12-2009
Posts: 143
From: Charlotte NC
I got my Airaid in this week... will be installing this weekend. I'll let y'all know how it goes.
Old Oct 8, 2009 | 10:48 AM
  #12  
JoeR's Avatar
Senior Member
 
Joined: 10-02-2005
Posts: 1,245
From: VA
Originally Posted by jay loukakis
check the socal hhr website they tested 4 diffrent mfgs. airraid had a HP loss
That faked chart was more than just clueless and biased, for anyone who knows how HP and TQ are computed, those FAKE numbers are downright IMPOSSIBLE!!!

Referring to this:



I've said it before and I'll say it again....

Knowing the the OEM intake is NOT restrictive, any other choice had better be a matter of desired appearance or sound. Do not expect any gains in either HP or MPG.

.
Old Oct 8, 2009 | 11:09 AM
  #13  
solman98's Avatar
Senior Member
 
Joined: 07-17-2006
Posts: 6,053
From: Dallas, GA
You saying a stock 2.4 auto can't put down 159HP on a dyno?



Old Oct 8, 2009 | 11:47 AM
  #14  
JoeR's Avatar
Senior Member
 
Joined: 10-02-2005
Posts: 1,245
From: VA
Originally Posted by solman98
You saying a stock 2.4 auto can't put down 159HP on a dyno?



Nope!! A "good one" may, but normally about 145 WHP, but....

Keep in mind, we are talking about crankshaft HP and TQ, vs. "to the wheels (dyno)" numbers....

For some reason, GM rates the 2.4 at 165 TQ (engine dyno), yet this "fake chart" shows 167 to the wheels. Given the drivetrain losses, that number is physically impossible!!, unless someone has a "miracle" engine. With a FWD car, expect about a 10 - 15% loss to the wheels.

Horsepower is nothing more than a calculation of torque vs. RPM, even on a dyno. Here is the SAE formula:

HP = TQ * RPM / 5252

Play with this fake chart and the SAE calculation formula and see what ya'll come up with!!

I've done the "math" on this (hey, I'm a SAE engineer!) and know, without a doubt, that that chart is FAKE or, at least, based upon inaccurate data.
Old Oct 8, 2009 | 12:19 PM
  #15  
solman98's Avatar
Senior Member
 
Joined: 07-17-2006
Posts: 6,053
From: Dallas, GA
Originally Posted by JoeR
Nope!! A "good one" may, but normally about 145 WHP, but....

Keep in mind, we are talking about crankshaft HP and TQ, vs. "to the wheels (dyno)" numbers....

For some reason, GM rates the 2.4 at 165 TQ (engine dyno), yet this "fake chart" shows 167 to the wheels. Given the drivetrain losses, that number is physically impossible!!, unless someone has a "miracle" engine. With a FWD car, expect about a 10 - 15% loss to the wheels.

Horsepower is nothing more than a calculation of torque vs. RPM, even on a dyno. Here is the SAE formula:

HP = TQ * RPM / 5252

Play with this fake chart and the SAE calculation formula and see what ya'll come up with!!

I've done the "math" on this (hey, I'm a SAE engineer!) and know, without a doubt, that that chart is FAKE or, at least, based upon inaccurate data.
Easy to see what product he was selling.....
Old Oct 8, 2009 | 02:17 PM
  #16  
RaineMan's Avatar
Senior Member
 
Joined: 09-12-2009
Posts: 143
From: Charlotte NC
Anyone should notice that those numbers are skewed.

#1 being that our 4-bangers do not make more torque than HP.
Old Nov 3, 2009 | 02:45 AM
  #17  
BLAQ's Avatar
Senior Member
 
Joined: 03-18-2008
Posts: 99
From: Chicagoland
Originally Posted by JoeR
Referring to this:
Hmm... Temperature variant greater than 3 degrees

How much greater?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
henr1e
Mods - Engine/Exhaust
3
Apr 28, 2014 11:58 AM
intofocuszx3
2.2L Performance Tech
0
Jan 25, 2009 02:58 PM
intofocuszx3
2.2L Performance Tech
0
Sep 15, 2007 05:49 PM
txsman2930
2.2L Performance Tech
2
Jun 30, 2006 03:12 PM




All times are GMT -5. The time now is 06:11 PM.