How do the Cold Air Intakes perform
Thread Starter
Racer
Joined: Nov 2005
Posts: 399
Likes: 0
From: Houston
How do the Cold Air Intakes perform
What are people's experience with the CAI versus filter change versus stock. Any real nice gains or just something to check off on a list of to dos?
Thank you
Thank you
Race Director
Joined: Apr 2005
Posts: 10,436
Likes: 4
From: Everett Wa
I have got chart from doing all 3 but can find the middle charts that have just K&N filters added. Anyway just adding K&N's did really do anything, maybe a 1 hp gain but that can be dyno variance because it happened on a different dyno.
I did add a Vararam intake though with a tune. HP and Torqoue up across the board. At peak up 16hp and torque 12 Ft lbs. But that is not the real story IMO. The gains don't fall off after peak and get wider.
I did add a Vararam intake though with a tune. HP and Torqoue up across the board. At peak up 16hp and torque 12 Ft lbs. But that is not the real story IMO. The gains don't fall off after peak and get wider.
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by chempowr
What are people's experience with the CAI versus filter change versus stock. Any real nice gains or just something to check off on a list of to dos?
Thank you
Thank you
i have tried a variety of filter/intake ducting mods but unfortunately i don't own my own dyno so i can't provide 'hard data' to support my pposition.
there is also conjecture that some gains will not show up on the dyno simply due to the difference in airflow, road vs. fan.
imo/experience,
simply changing the filters and using the stock airboxes/ducting provides the least improvement, if any.
replacing the filters, cutting the shroud, flipping (aiming the boxes through the shroud) and swapping (left for right) the airboxes and sealing the opening seems to provide the best homemade gains, on par with some aftermarket systems.
the k&n, halltech style provide some airflow improvements.
the callaway, lingenfelter style provide better airflow gains and modest ram-air gains.
the vararam seems to provide the most airflow and ram-air gains.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 265
From: St. Louis, MO
St. Jude Donor '08
Here's my Vararam install instructions and track results.
http://forums.corvetteforum.com/show....php?t=1434941
http://forums.corvetteforum.com/show....php?t=1434941
Thread Starter
Racer
Joined: Nov 2005
Posts: 399
Likes: 0
From: Houston
Update!! Vararam works!
Put on Vararam CAI myself and ran 0.3s faster at the 1/4. Originally I went with the CAI only on the car for about 50 miles and instruction say it needs to be on about 100-200 miles so the computer learns. I didn't believe but I didn't see the improvement until the second trip to the 1/4 where I had about 500 miles on the setup. Thanks Vararam and No I don't own stock in the company 
Burning Brakes
Joined: Oct 2005
Posts: 1,131
Likes: 0
From: Dallas Texas
Here are my dynos from the stock motor.
342 Stock
368 Hallteach and no CAI
378 Lingenfelter CAI
The most obvious was the gains I got at mid range with the LPE CAI.
This the dyno from my 403 with the LPE CAI
342 Stock
368 Hallteach and no CAI
378 Lingenfelter CAI
The most obvious was the gains I got at mid range with the LPE CAI.
This the dyno from my 403 with the LPE CAI
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Advanced
Joined: May 2006
Posts: 55
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I think you might get the most out of a ram air setup. I installed the Vararam CAI with TB spacer. Didn't get any dyno results but I did get track results, which I think really tell the story. To sum it up, I gained about 3 tenths in the quarter. Check out one of my previos posts for time slip and other info for comparison of stock vs. Vararam.
http://forums.corvetteforum.com/show....php?t=1524643
Hope this helps.
http://forums.corvetteforum.com/show....php?t=1524643
Hope this helps.
Burning Brakes
Joined: Oct 2005
Posts: 1,131
Likes: 0
From: Dallas Texas
Originally Posted by PhatPharmD
I think you might get the most out of a ram air setup. I installed the Vararam CAI with TB spacer. Didn't get any dyno results but I did get track results, which I think really tell the story. To sum it up, I gained about 3 tenths in the quarter. Check out one of my previos posts for time slip and other info for comparison of stock vs. Vararam.
http://forums.corvetteforum.com/show....php?t=1524643
Hope this helps.
http://forums.corvetteforum.com/show....php?t=1524643
Hope this helps.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 265
From: St. Louis, MO
St. Jude Donor '08
Check out post 50 of this thread...
http://forums.corvetteforum.com/show....php?t=1526972
lowering your IAT helps a LOT! See out how much timing gets pulled.
http://forums.corvetteforum.com/show....php?t=1526972
lowering your IAT helps a LOT! See out how much timing gets pulled.
Drifting
Joined: Sep 2004
Posts: 1,551
Likes: 4
From: Livingston Texas
Originally Posted by Joe_G
Check out post 50 of this thread...
http://forums.corvetteforum.com/show....php?t=1526972
lowering your IAT helps a LOT! See out how much timing gets pulled.
http://forums.corvetteforum.com/show....php?t=1526972
lowering your IAT helps a LOT! See out how much timing gets pulled.
But where are the post with actual data showing a reduction in IAT. I was surprised how well the stock intake performs. The Halltech did seem to drop the IAT faster than stock. The only other scans I have seen for aftermarket airbridges, the IAT is higher at speed but it will decrease from peak faster than both the stock and the Halltech will.I have asked this question in post where the manufacturers were active but I have never received a response from them.
Pro
Joined: May 2004
Posts: 506
Likes: 0
From: Elk Grove CA
Originally Posted by midnite902
Here are my dynos from the stock motor.
342 Stock
368 Hallteach and no CAI
378 Lingenfelter CAI
The most obvious was the gains I got at mid range with the LPE CAI.
342 Stock
368 Hallteach and no CAI
378 Lingenfelter CAI
The most obvious was the gains I got at mid range with the LPE CAI.
I've seen people get those gains with headers, but not just an intake!
Safety Car
Joined: May 2005
Posts: 3,990
Likes: 1
From: Corpus Christi Texas
My Halltech netted me nothing in the 1/8th mile over stock. Maybe the 1/4 mile would shown me something but didn't get a chance to run the quarter before more mods showed up at my door.
Drifting
Joined: Sep 2004
Posts: 1,551
Likes: 4
From: Livingston Texas
Originally Posted by Brett Hunter
But where are the post with actual data showing a reduction in IAT. I was surprised how well the stock intake performs. The Halltech did seem to drop the IAT faster than stock. The only other scans I have seen for aftermarket airbridges, the IAT is higher at speed but it will decrease from peak faster than both the stock and the Halltech will.I have asked this question in post where the manufacturers were active but I have never received a response from them.
Anyone? I know there are a lot of guys with logging software now.
Le Mans Master
Joined: Oct 2005
Posts: 5,054
Likes: 889
From: Tampa Florida
Originally Posted by TMyers
I have got chart from doing all 3 but can find the middle charts that have just K&N filters added. Anyway just adding K&N's did really do anything, maybe a 1 hp gain but that can be dyno variance because it happened on a different dyno.
I did add a Vararam intake though with a tune. HP and Torqoue up across the board. At peak up 16hp and torque 12 Ft lbs. But that is not the real story IMO. The gains don't fall off after peak and get wider.
I did add a Vararam intake though with a tune. HP and Torqoue up across the board. At peak up 16hp and torque 12 Ft lbs. But that is not the real story IMO. The gains don't fall off after peak and get wider.
Drifting
Joined: Jul 2003
Posts: 1,796
Likes: 1
From: Annandale VA
Originally Posted by Zig
my experience has lead me too believe that a well designed cai does indeed provide noticeable gains.
i have tried a variety of filter/intake ducting mods but unfortunately i don't own my own dyno so i can't provide 'hard data' to support my pposition.
there is also conjecture that some gains will not show up on the dyno simply due to the difference in airflow, road vs. fan.
imo/experience,
simply changing the filters and using the stock airboxes/ducting provides the least improvement, if any.
replacing the filters, cutting the shroud, flipping (aiming the boxes through the shroud) and swapping (left for right) the airboxes and sealing the opening seems to provide the best homemade gains, on par with some aftermarket systems.
the k&n, halltech style provide some airflow improvements.
the callaway, lingenfelter style provide better airflow gains and modest ram-air gains.
the vararam seems to provide the most airflow and ram-air gains.
i have tried a variety of filter/intake ducting mods but unfortunately i don't own my own dyno so i can't provide 'hard data' to support my pposition.
there is also conjecture that some gains will not show up on the dyno simply due to the difference in airflow, road vs. fan.
imo/experience,
simply changing the filters and using the stock airboxes/ducting provides the least improvement, if any.
replacing the filters, cutting the shroud, flipping (aiming the boxes through the shroud) and swapping (left for right) the airboxes and sealing the opening seems to provide the best homemade gains, on par with some aftermarket systems.
the k&n, halltech style provide some airflow improvements.
the callaway, lingenfelter style provide better airflow gains and modest ram-air gains.
the vararam seems to provide the most airflow and ram-air gains.