AFM question
Seduced by the DARK SIDE
Joined: Apr 2001
Posts: 7,323
Likes: 2
From: Orange Park FL (near Jax)
When modifying the intake for FMIC it seems to me like passing compressed & intercooled air through the AFM would be more efficient:
1) More air volume for the same pressure drop.
2) No wasted fuel during closed throttle blow-off.
1) More air volume for the same pressure drop.
2) No wasted fuel during closed throttle blow-off.
I wish I was driving!
Joined: Dec 2001
Posts: 5,241
Likes: 84
From: BC, Canada
Originally posted by SureShot
When modifying the intake for FMIC it seems to me like passing compressed & intercooled air through the AFM would be more efficient:
1) More air volume for the same pressure drop.
2) No wasted fuel during closed throttle blow-off.
When modifying the intake for FMIC it seems to me like passing compressed & intercooled air through the AFM would be more efficient:
1) More air volume for the same pressure drop.
2) No wasted fuel during closed throttle blow-off.
Locust of the apocalypse
Joined: Apr 2003
Posts: 2,553
Likes: 2
From: Directly above the center of the earth (York, PA)
You definately want to put it AFTER the FMIC... i don't think the AFM is going to like the 2-300 degree temps its going to see if it's inline BEFORE the IC.
the biggest difference i noted was when i ditched the thing all together. (haltech)
the biggest difference i noted was when i ditched the thing all together. (haltech)
Seduced by the DARK SIDE
Joined: Apr 2001
Posts: 7,323
Likes: 2
From: Orange Park FL (near Jax)
Originally posted by scathcart
1) Volumetric restrictions don't care where they are placed, they still restrict; top end power will be the same.
1) Volumetric restrictions don't care where they are placed, they still restrict; top end power will be the same.
This effect diminishes at higher pressures, but up to 1 Bar it's fairly linear.
Seduced by the DARK SIDE
Joined: Apr 2001
Posts: 7,323
Likes: 2
From: Orange Park FL (near Jax)
Originally posted by YearsOfDecay
You definately want to put it AFTER the FMIC... i don't think the AFM is going to like the 2-300 degree temps its going to see if it's inline BEFORE the IC.
You definately want to put it AFTER the FMIC... i don't think the AFM is going to like the 2-300 degree temps its going to see if it's inline BEFORE the IC.
Originally posted by YearsOfDecay
the biggest difference i noted was when i ditched the thing all together. (haltech)
the biggest difference i noted was when i ditched the thing all together. (haltech)
Trending Topics
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Keep in mind that the S4 (and I believe S5 as well) AFMs include temp sensors. Also, it has been debated whether the S4 AFM will stand up to boost pressure in the long-term.
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