Is it true that the shaker package option is non-functional? - Page 3 - Dodge Challenger Forum: Challenger & SRT8 Forums
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post #21 of 69 (permalink) Old 04-22-2019, 11:10 AM
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Originally Posted by chizzle1 View Post
another option is to get an AFR functional ram shaker.
That's the route I went and have been very happy with it.
It is the only shaker setup out there that actually routes air directly to the engine, like the old style setup.
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Originally Posted by Hal H View Post
Yes - the AFR does function as the air cleaner and fresh air scoop. This won't work on the 392 intake, as it angles to the driver's side vs. the front feed on the 5.7 / 6.1 intakes
I had an AFR Shaker on my 2012 392 Challenger. Loved how it looked. The car was a little slower on the drag strip with it though...couple tenths/couple mph difference versus the stock air intake.

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post #22 of 69 (permalink) Old 04-22-2019, 10:54 PM
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So I hate to burst everyone's bubble, but the shaker isn't and never really was "functional". Anyone who knows anything about aerodynamics knows about a thing called the "boundary layer". At higher speeds the air you think you're forcing through your shaker is actually just going right over the hood of the car. Ever wonder how that bug seems to hold on at 60 mph? No, he's not really strong, just physics working in his favor.

The headlight induction is completely different. You're catching incoming air before it's forced up and far over the hood surface of the car.

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post #23 of 69 (permalink) Old 04-23-2019, 05:40 AM
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Originally Posted by EricG View Post
I had an AFR Shaker on my 2012 392 Challenger. Loved how it looked. The car was a little slower on the drag strip with it though...couple tenths/couple mph difference versus the stock air intake.
It might have been due to restriction - seeing how the airflow has to do a 180* to go from the bubble to the TB and possible less filtration area...?

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post #24 of 69 (permalink) Old 04-23-2019, 05:42 AM
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Quote:
Originally Posted by Sublime69 View Post
So I hate to burst everyone's bubble, but the shaker isn't and never really was "functional". Anyone who knows anything about aerodynamics knows about a thing called the "boundary layer". At higher speeds the air you think you're forcing through your shaker is actually just going right over the hood of the car. Ever wonder how that bug seems to hold on at 60 mph? No, he's not really strong, just physics working in his favor.

The headlight induction is completely different. You're catching incoming air before it's forced up and far over the hood surface of the car.

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FCA did wind tunnel testing when designing for the '14s.

Their engineering team went with the approach of making it functional rather than just for appearance's sake
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post #25 of 69 (permalink) Old 04-23-2019, 06:41 AM
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Quote:
Originally Posted by EricG View Post
I had an AFR Shaker on my 2012 392 Challenger. Loved how it looked. The car was a little slower on the drag strip with it though...couple tenths/couple mph difference versus the stock air intake.
I would disagree. Even tho the filter diameter on my shaker is larger than the CAI I had (x treme lid + 14" round) the lack of heat soak and fresh air would be a definite advantage.
I measured the difference on the rollers with the shaker vs the CAI and it was a definite advantage (don't remember now, it's been years ago).
A few tenths at the track could be a difference in DA or shifting.


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post #26 of 69 (permalink) Old 04-23-2019, 06:43 AM
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Quote:
Originally Posted by Sublime69 View Post
So I hate to burst everyone's bubble, but the shaker isn't and never really was "functional". Anyone who knows anything about aerodynamics knows about a thing called the "boundary layer". At higher speeds the air you think you're forcing through your shaker is actually just going right over the hood of the car. Ever wonder how that bug seems to hold on at 60 mph? No, he's not really strong, just physics working in his favor.

The headlight induction is completely different. You're catching incoming air before it's forced up and far over the hood surface of the car.

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The air temps in the tube and the intake are lower, so it's getting fresh air from somwhere
Additionally the team at AFR designed the hood to sit lower in the middle to allow air to the shaker...it's not just an after thought.
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post #27 of 69 (permalink) Old 04-23-2019, 06:45 AM
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Originally Posted by Hal H View Post
It might have been due to restriction - seeing how the airflow has to do a 180* to go from the bubble to the TB and possible less filtration area...?
^ why I went with the xtreme lid. I talked to steve at AFR and he recommended that for more airflow when I was swapping in the stroker.
The shaker they make for supercharged applications has a separate box that sits down at the driver side area to draw added air when needed.

Even if it made the same power as a CAI or stock, it looks like the shakers from back in the day.
It's cool being able to see the filter under the scoop.
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post #28 of 69 (permalink) Old 04-23-2019, 07:21 AM
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Quote:
Originally Posted by Sublime69 View Post
So I hate to burst everyone's bubble, but the shaker isn't and never really was "functional". Anyone who knows anything about aerodynamics knows about a thing called the "boundary layer". At higher speeds the air you think you're forcing through your shaker is actually just going right over the hood of the car. Ever wonder how that bug seems to hold on at 60 mph? No, he's not really strong, just physics working in his favor.

The headlight induction is completely different. You're catching incoming air before it's forced up and far over the hood surface of the car.

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I think you're confusing efficient with functional.

It's still functional, it will draw air from above the hood, air doesn't simply vacate the area.

Whether or not it's worth it's price beyond the cool factor is another matter.

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post #29 of 69 (permalink) Old 04-23-2019, 12:26 PM Thread Starter
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Quote:
Originally Posted by praiseV8 View Post
I think you're confusing efficient with functional.

It's still functional, it will draw air from above the hood, air doesn't simply vacate the area.

Whether or not it's worth it's price beyond the cool factor is another matter.



For $2,200 option that's a lot for something fake and with a hole in the hood.
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post #30 of 69 (permalink) Old 04-23-2019, 12:32 PM
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For $2,200 option that's a lot for something fake and with a hole in the hood.
Again...

Functional being confused with efficient.




It's not "fake" if it's still feeding air into the intake.
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