Air filter placement question
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 1,192
Likes: 111
From: If your not the lead dog the view never changes Boise, Id
Air filter placement question
I have a rams horn air cleaner with two k&n filters on it. I am thinking about cutting the radiator shroud it sits on so the bottom half of the filters are being fed from the bottom. Will this help them collect more air or will the difference in air pressure top to bottom actually hurt performance?
Melting Slicks
Joined: Apr 2009
Posts: 2,479
Likes: 36
Your best bet is to open up your foglight shrouds (similar to the Z06). I have the Volant twin cone air intake. I performed this mod on mine and added some Z06 wire mesh screens to keep debris out. I then went for a drive and I used a live data scanner to monitor my intake air temperature. The IAT remained close to ambient outside temperature. Proof it works perfectly and you get the Z06 front end look as a bonus.
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Your best bet is to open up your foglight shrouds (similar to the Z06). I have the Volant twin cone air intake. I performed this mod on mine and added some Z06 wire mesh screens to keep debris out. I then went for a drive and I used a live data scanner to monitor my intake air temperature. The IAT remained close to ambient outside temperature. Proof it works perfectly and you get the Z06 front end look as a bonus.
I cut the foglight shrouds. Or you can just take the shrouds out.It does work.
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 1,192
Likes: 111
From: If your not the lead dog the view never changes Boise, Id
Thanks I do have the fog lights opened up with a screen, I was just wondering if opening up the bottom would give a ram effect at speed
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Unless you put a BOX over the filters and use a SCOOP to direct the air into the box, NO GAIN is to be observed.
BC
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 1,192
Likes: 111
From: If your not the lead dog the view never changes Boise, Id
So by cutting the shroud the filters sit on so the bottom half of the filter is in the cavity that air gets to the radiator will get me more cool air? Not a ram air effect but will it be beneficial?
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
I use a K&N intake and I cut out the shroud... The whole bottom half sits down where there is fresh cool air. The only down side is that the filter can collect more dirt in a faster time. But that's what cleaning kits are for right?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Racer
Joined: Jun 2012
Posts: 459
Likes: 1
From: LAUREL MD
Air filter
You might consider a front hood seal. It apparently decreases air turbulence under the hood and aids air flow to your filters. It also helps with keeping engine bay clean by keeping dirt/debris from entering through the front edge of the hood.
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 1,192
Likes: 111
From: If your not the lead dog the view never changes Boise, Id
That's what I was thinking about doing! Thanks
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Take a look at this:
http://www.conceptualpolymer.com/Rad...op%20inst..pdf
I measured a significant drop in air intake temperature, before and after this mod. I don't have the fog light covers cored out because I didn't want screens to cover my fog lights. Fortunately, my intake mod prevents HP loss by constantly (while car is in motion) supplying outside air to the intake. The added benefit is a significant drop in engine bay temp, which prolongs the life of drive belts, hoses, circuits, and plastic components. (something the flip-tie mod doesn't do if your fog light covers aren't cored out or removed completely.)
http://www.conceptualpolymer.com/Rad...op%20inst..pdf
I measured a significant drop in air intake temperature, before and after this mod. I don't have the fog light covers cored out because I didn't want screens to cover my fog lights. Fortunately, my intake mod prevents HP loss by constantly (while car is in motion) supplying outside air to the intake. The added benefit is a significant drop in engine bay temp, which prolongs the life of drive belts, hoses, circuits, and plastic components. (something the flip-tie mod doesn't do if your fog light covers aren't cored out or removed completely.)
Last edited by Dave68; Sep 23, 2012 at 02:04 AM.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
The most important thing when fabricating a cold air intake is to always try to loctae the MAF in the same position as it was in STOCK trim-Don't move it closer or further away from the throttle body if at all possible--When moving the MAF it will read the incoming air differently than it was callibrated from the factory--Not the end of the world if you have your own tuner or plan on getting it re-tuned---
Same goes with removing the screen --dont remove it unless you are prepared for a re-tune--Besides the STOCK MAF is plenty capable of 500 HP or better --screen and all--
Moving the MAF locaton will create idle issues--- hunting and surging-- Dying issues when lifting--Starting problems--and finally if your fuel trims go positive ( most likely) at P/T --then that positive trim willbe added to your WOT fuel as well as a safety and your eng will get lazy and pig rich at WOT or power enrichment
Same goes with removing the screen --dont remove it unless you are prepared for a re-tune--Besides the STOCK MAF is plenty capable of 500 HP or better --screen and all--
Moving the MAF locaton will create idle issues--- hunting and surging-- Dying issues when lifting--Starting problems--and finally if your fuel trims go positive ( most likely) at P/T --then that positive trim willbe added to your WOT fuel as well as a safety and your eng will get lazy and pig rich at WOT or power enrichment
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 1,192
Likes: 111
From: If your not the lead dog the view never changes Boise, Id
The most important thing when fabricating a cold air intake is to always try to loctae the MAF in the same position as it was in STOCK trim-Don't move it closer or further away from the throttle body if at all possible--When moving the MAF it will read the incoming air differently than it was callibrated from the factory--Not the end of the world if you have your own tuner or plan on getting it re-tuned---
Same goes with removing the screen --dont remove it unless you are prepared for a re-tune--Besides the STOCK MAF is plenty capable of 500 HP or better --screen and all--
Moving the MAF locaton will create idle issues--- hunting and surging-- Dying issues when lifting--Starting problems--and finally if your fuel trims go positive ( most likely) at P/T --then that positive trim willbe added to your WOT fuel as well as a safety and your eng will get lazy and pig rich at WOT or power enrichment
Same goes with removing the screen --dont remove it unless you are prepared for a re-tune--Besides the STOCK MAF is plenty capable of 500 HP or better --screen and all--
Moving the MAF locaton will create idle issues--- hunting and surging-- Dying issues when lifting--Starting problems--and finally if your fuel trims go positive ( most likely) at P/T --then that positive trim willbe added to your WOT fuel as well as a safety and your eng will get lazy and pig rich at WOT or power enrichment
Good to know. I was not planning on moving the maf just sinking the two air filters and putting in a screen.
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
The most important thing when fabricating a cold air intake is to always try to loctae the MAF in the same position as it was in STOCK trim-Don't move it closer or further away from the throttle body if at all possible--When moving the MAF it will read the incoming air differently than it was callibrated from the factory--Not the end of the world if you have your own tuner or plan on getting it re-tuned---
Same goes with removing the screen --dont remove it unless you are prepared for a re-tune--Besides the STOCK MAF is plenty capable of 500 HP or better --screen and all--
Moving the MAF locaton will create idle issues--- hunting and surging-- Dying issues when lifting--Starting problems--and finally if your fuel trims go positive ( most likely) at P/T --then that positive trim willbe added to your WOT fuel as well as a safety and your eng will get lazy and pig rich at WOT or power enrichment
Same goes with removing the screen --dont remove it unless you are prepared for a re-tune--Besides the STOCK MAF is plenty capable of 500 HP or better --screen and all--
Moving the MAF locaton will create idle issues--- hunting and surging-- Dying issues when lifting--Starting problems--and finally if your fuel trims go positive ( most likely) at P/T --then that positive trim willbe added to your WOT fuel as well as a safety and your eng will get lazy and pig rich at WOT or power enrichment
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
Yes can be fixed with tuning to correct idle/surging issues--however there is NO HP advantage---I have seen installations on Siverado's where someone has mounted the MAF right onto the T-body !! Again no advantage here--other than freeing up some space
But you create a ton of turbulence when the throttle is opened only slightly as the air has to make aburbt turns to pass over the bottom and the top of the blade--
But you create a ton of turbulence when the throttle is opened only slightly as the air has to make aburbt turns to pass over the bottom and the top of the blade--
Melting Slicks
Joined: Jun 2004
Posts: 2,453
Likes: 81
From: Fishin' Pole FL
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Yes can be fixed with tuning to correct idle/surging issues--however there is NO HP advantage---I have seen installations on Siverado's where someone has mounted the MAF right onto the T-body !! Again no advantage here--other than freeing up some space
But you create a ton of turbulence when the throttle is opened only slightly as the air has to make aburbt turns to pass over the bottom and the top of the blade--
But you create a ton of turbulence when the throttle is opened only slightly as the air has to make aburbt turns to pass over the bottom and the top of the blade--