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  #37  
Old 04-04-2012, 07:24 AM
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Re: aFe Power 5.7L CAI

Nice
I would like to see how close the numbers are to K&N's fraudulent
numbers
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  #38  
Old 04-04-2012, 09:12 AM
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Re: aFe Power 5.7L CAI

Quote:
Originally Posted by BuckeyeSRT View Post
Nice
I would like to see how close the numbers are to K&N's fraudulent
numbers
I am highly skeptical of any manufacturer's dyno numbers - they're trying to grab eyeballs and your wallet, after all. I don't want to jump too deep into an old conversation, but my experience is that a short-ram like K&N usually nets a handful of HP, if that (not even going to bring heatsoak into the conversation).

17WHP due to reduced turbulence and better air filtration? In a modern engine & ECU that probably gets more than enough air already? Without tuning? Hmm...
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  #39  
Old 04-04-2012, 09:27 AM
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Re: aFe Power 5.7L CAI

I am too skeptical.

That being said, I will have real pre/post dyno sheets in my hand on Tuesday and will be able to validate and or refute any claims that are made.


One more thing to think about: 2wd vs 4wd dyno results? What car did K&N "test" their intake on? Gains at the wheel would be more significant on a 2wd vehicle as there is less drive train loss compared to 4x4? This is just a question and would like to see your opinions on it.
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  #40  
Old 04-04-2012, 10:40 AM
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Re: aFe Power 5.7L CAI

looks like they have one for the V6

http://afepower.com/shop/details_new...ily&brandID=53
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  #41  
Old 04-04-2012, 11:41 AM
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Re: aFe Power 5.7L CAI

Quote:
Originally Posted by ants818 View Post
looks like they have one for the V6

http://afepower.com/shop/details_new...ily&brandID=53
And they have a real dyno sheet

I'm excited to see how my Jeep tests out.
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  #42  
Old 04-04-2012, 12:25 PM
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Re: aFe Power 5.7L CAI

In general the 5% increase is satisfactory.
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  #43  
Old 04-04-2012, 12:42 PM
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Re: aFe Power 5.7L CAI

Quote:
Originally Posted by montgb View Post
I am highly skeptical of any manufacturer's dyno numbers - they're trying to grab eyeballs and your wallet, after all. I don't want to jump too deep into an old conversation, but my experience is that a short-ram like K&N usually nets a handful of HP, if that (not even going to bring heatsoak into the conversation).

17WHP due to reduced turbulence and better air filtration? In a modern engine & ECU that probably gets more than enough air already? Without tuning? Hmm...
Short-ram? What is that?
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  #44  
Old 04-04-2012, 05:10 PM
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Re: aFe Power 5.7L CAI

Quote:
Originally Posted by ooja3k View Post
I am too skeptical.

One more thing to think about: 2wd vs 4wd dyno results? What car did K&N "test" their intake on? Gains at the wheel would be more significant on a 2wd vehicle as there is less drive train loss compared to 4x4? This is just a question and would like to see your opinions on it.
As long as you have a before & after reading from the same vehicle on the same dyno, the drive train loss isn't a factor.
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  #45  
Old 04-04-2012, 05:14 PM
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Re: aFe Power 5.7L CAI

I am thinking more along the lines of the CAI will add "x" much HP at the crank, and "y" at the wheel.

On a 4x4 this "y" would be less than the "y" on a 2wd vehicle due to drivetrain loss; even though the "x" value is the same.

That being said, lets say I see a gain of 10whp on my 4x4. Would that mean that on a 2wd Jeep you will see an even larger increase??
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  #46  
Old 04-05-2012, 09:13 AM
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Re: aFe Power 5.7L CAI

Quote:
Originally Posted by BuckeyeSRT View Post
Short-ram? What is that?
Its a generic term for an OEM replacement intake that uses a pipe + conical filter. Often times manufacturers will masquerade a Short-Ram Intake as a CAI by putting a barrier between itself and the engine block - but more often than not it's just for show since it's not completely sealed off from the hot air in the engine bay.

A true CAI will draw air from outside of the engine compartment.

Not to say that people won't get a boost from an SRI, especially if it's less restrictive than OEM and fresh air is quickly moving through engine bay. That's why you'll see people dyno their intakes with the hood up and large fans blowing at the front of the car.
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  #47  
Old 04-05-2012, 09:22 AM
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Re: aFe Power 5.7L CAI

Quote:
Originally Posted by ooja3k View Post
I am thinking more along the lines of the CAI will add "x" much HP at the crank, and "y" at the wheel.

On a 4x4 this "y" would be less than the "y" on a 2wd vehicle due to drivetrain loss; even though the "x" value is the same.

That being said, lets say I see a gain of 10whp on my 4x4. Would that mean that on a 2wd Jeep you will see an even larger increase??
I think context would be important. Can it be assumed that a 4x2 would have a higher starting whp number than a 4x4, all other things being equal?

Someone smarter than me will have to sort this out.
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  #48  
Old 04-05-2012, 12:55 PM
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Re: aFe Power 5.7L CAI

ooja3k: Did you get the dyno results back?
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