Cold Air Intake Independent Testing Results by Jannetty Racing

[jnewberr2ssrs]

Ted, I watched the thread progress the entire way through and have learned a little about fuel trims, that ram air is a myth (and yes, I believe you on that argument), and about all the cold air intake kits in general...

Thanks for doing this! I know it cost you time and money to do this for us, but it was a much appreciated cause! You are a stand up guy and an invaluable member of the Camaro5 community

[Edge.128]

Great info thank you for all the hard work!!

[swansor]

Thanks for all your hard work Ted. I learned a lot

[benjaminkeith]

Awesome work! Is there anyway we could get the URLs for the products on the spreadsheet?

Thanks! You've solved my CAI problem of too many choices!

[nassau97]

Ted, Thank you for taking your valuable time to do this test for us all. It is people like you who help make discussion forums valuable learning tools.

[defragme]

Originally Posted by philipdistefano

I still don't understand how fuel trim affects gas mileage after reading all of the posts trying to explain. Can someone just say if a negative fuel trim % gives better or worse gas mileage?

They have already been kindof trying to answer these questions. I understand your thought process: negative fuel trim should mean less fuel burned.

As the other posters have said, the ECM tries to keep the air/fuel mixture at a constant 14.6 to 1 ratio. In a perfect world this ratio would always be the same in your engine, as it is the correct amount of oxygen required to burn gasoline completely.

I think you are misunderstanding what the fuel trim is. I will put into my own words the explaination of the OP, others feel free to correct me if I'm wrong:

A negative fuel trim does not mean there is less fuel being being burned in the engine like a kink in a garden hose. The MAF sensor makes an "estimate" of how much fuel is needed. After the fuel is burned the O2 sensor makes a more accurrate measurement, and tells the computer "Hey, the MAF was wrong, so add less fuel because you are putting in too much" This has nothing to do with having a CAI on your car. It is just the cars attempt at keeping the air/fuel mixture at 14.6 ratio.

The reason the tester included these numbers in the spreadsheet is so that we could all see how well the CAI was designed with respect to the position of the MAF sensor. If it was designed well, then the fuel should not have to be trimmed much either + or -. (Meaning the MAF did a good job with its "estimate")

Also: I want to add that I am not saying some of these are designed bad. If the fuel is being trimmed a lot, then the MAF can be recalibrated with a tune to correct for that. So his numbers tell us WITH A STOCK TUNE whether the MAF placement is good or not.

[Gary B]

Very cool test results....big thanks for Ted and crew for all there hard work! Love to see a lot of parts tested this way if it was cost feasible. Someone like GM HighTech needs to be involved to cover some costs for that though.

[Mod4SS]

Originally Posted by PatrickfromMD

Awesome work! GM- High Tech should have contracted you to do an article. Since you are on a roll, care to provide a conclusion, personal comments, or what you might be recommending to your customers? (stock as well as modified) Any advice which ones will be positive displacement blower friendly?

Originally Posted by yellow1

my impression of the results = CAI's are a waste of money. ~$400 to gain 5 hp? I would rather set my hair on fire..

Originally Posted by Drive fast, take chances

One thing I did not see in the test set-up: Did you provide fans blowing cool air thru the radiator at the rate you would get going down the road at each RPM in 4th gear (I assume you used 4th gear)? If not, then the test doesn't give a very true picture of real world road performance.

http://www.camaro5.com/forums/showthread.php?t=43722

[BackinBlackSS/RS]

Originally Posted by defragme

They have already been kindof trying to answer these questions. I understand your thought process: negative fuel trim should mean less fuel burned.

As the other posters have said, the ECM tries to keep the air/fuel mixture at a constant 14.6 to 1 ratio. In a perfect world this ratio would always be the same in your engine, as it is the correct amount of oxygen required to burn gasoline completely.

I think you are misunderstanding what the fuel trim is. I will put into my own words the explaination of the OP, others feel free to correct me if I'm wrong:

A negative fuel trim does not mean there is less fuel being being burned in the engine like a kink in a garden hose. The MAF sensor makes an "estimate" of how much fuel is needed. After the fuel is burned the O2 sensor makes a more accurrate measurement, and tells the computer "Hey, the MAF was wrong, so add less fuel because you are putting in too much" This has nothing to do with having a CAI on your car. It is just the cars attempt at keeping the air/fuel mixture at 14.6 ratio.

The reason the tester included these numbers in the spreadsheet is so that we could all see how well the CAI was designed with respect to the position of the MAF sensor. If it was designed well, then the fuel should not have to be trimmed much either + or -. (Meaning the MAF did a good job with its "estimate")

Also: I want to add that I am not saying some of these are designed bad. If the fuel is being trimmed a lot, then the MAF can be recalibrated with a tune to correct for that. So his numbers tell us WITH A STOCK TUNE whether the MAF placement is good or not.

This is a very good explanation and easy to understand. Great job and thanks!

[themossman]

Ted-

Why do you suspect the temperatures got so hot with the LMR intake?

I have it installed on my car and have removed the washer bottle in attempts to get decent airflow into the cavity the shield creates. One thing I noticed is that in most of these setups there does not appear to be any path for air to flow into the cavity where the filter resides. Doesn't the stock airbox have a small snorkel to collect air from the upper grill? I did not install my CAI and the stock airbox is long gone.

....and finally...looking at my mods (see sig below), which solution would you recommend?

Thanks in advance,




(and to 2SSRS...you seem to have become a Vararam apologist...and I don't think you need to be. When the units are released, they will stand on their own merit. You don't need to tear someone else down to build yourself up. This approach is why your seeing the spears come back in your direction. Just my .02 cents. )

[JANNETTYRACING]

Originally Posted by philipdistefano

I still don't understand how fuel trim affects gas mileage after reading all of the posts trying to explain. Can someone just say if a negative fuel trim % gives better or worse gas mileage?

It should not affect fuel mileage unless they are more than 10% off.

Only because it affects which load cell it will pull timing from, as seen in the data.

Timing probably has more of an effect on fuel economy since these car all run at 14.7 A/F almost all the time.

[JANNETTYRACING]

Originally Posted by themossman

Ted-

Why do you suspect the temperatures got so hot with the LMR intake?

I have it installed on my car and have removed the washer bottle in attempts to get decent airflow into the cavity the shield creates. One thing I noticed is that in most of these setups there does not appear to be any path for air to flow into the cavity where the filter resides. Doesn't the stock airbox have a small snorkel to collect air from the upper grill? I did not install my CAI and the stock airbox is long gone.

....and finally...looking at my mods (see sig below), which solution would you recommend?

Thanks in advance,)

Any Gaps between the air box and the fender, or frame rail will allow hot air from the exhaust manifolds, radiator, etc to enter the air box and heat up the inlet air.

The best solution is to close all the gaps.

The systems that did well had tighter fitting air boxes.

Ted.

[DarkNight]

Originally Posted by 2SSRS

Yes there is and if you give Patrick till the 8 pm east cost time he will say it better then me, if not i will try to after, And i hope he will let me tell you some Dyno # for some of the testers.

Well it time to POST! Patrick...........the moon is out now!!!

[JANNETTYRACING]

Originally Posted by benjaminkeith

Awesome work! Is there anyway we could get the URLs for the products on the spreadsheet?

Thanks! You've solved my CAI problem of too many choices!

Any of these system can be purchased by contacting us, www.jannettyracing.com 203-753-7223 or email tedj@jannettyracing.com Parts manager al@jannettyracing.com parts specialist kris@jannettyracing.com

And you can talk to me personally for recommendations on your project.

The Manufacturers are setting us up as Dealer for they're products.