Cold Air Intake Independent Testing Results by Jannetty Racing

[Mr_Draco]

Originally Posted by HokieERVet

ok...I'm really confused now...

Positive trim= computer adding more fuel = using more gas

right?

so, not backwards?

Sorry...I'm a vet...not used to these metallic animals

Ok. No matter what the fuel trim states, this car's ecu is set to run at a 14.6:1 air/fuel ratio so no matter what CAI is used, the car will use the same amount of gas.

The fuel trim is simply a measure of what the ecu is adding (like the +7% for New Era) or subtracting (like the -5% for a couple others) in order to keep the a/f ratio at 14.6:1.

[Aceman74]

What I found strangely interesting was that people are buying the Fastlane kit soley on the horsepower gains. I think you would be hard pressed to feel a difference of 2-10 horsepower between any of the tested kits. I also find it interesting that the kits that were not tested are now shunned as if they've somehow done something wrong by us. Clearly if one of the untested kits didn't outperform the Fastlane kit what difference would it have made anyway. I'm happy with my purchase, I don't think the Fastlane kit is worth heavy sticker price, once these cars are all over the road they won't be able to give that kit away. Enoy all those backorders, I'm sure when the customers get ancy they aren't going to care that you made an extra 2 horsepower when they can get any of the other kits at the click of a button.

[kelleyperformance]

Originally Posted by Aceman74

What I found strangely interesting was that people are buying the Fastlane kit soley on the horsepower gains. I think you would be hard pressed to feel a difference of 2-10 horsepower between any of the tested kits. I also find it interesting that the kits that were not tested are now shunned as if they've somehow done something wrong by us. Clearly if one of the untested kits didn't outperform the Fastlane kit what difference would it have made anyway. I'm happy with my purchase, I don't think the Fastlane kit is worth heavy sticker price, once these cars are all over the road they won't be able to give that kit away. Enoy all those backorders, I'm sure when the customers get ancy they aren't going to care that you made an extra 2 horsepower when they can get any of the other kits at the click of a button.

its not about just the peak HP made... i could understand wanting a fastlane becase it takes 100% of its air from outside the engine bay. for example, with a blower 2-10 hp quickly becomes ALOT more. so if all these were tested on a cammed car or a FI car, there would be more signifigant differences.

[camaro1]

i wish that the brand cai that i have could have had one there for testing, but it isnt going to change my mind, i know from data logging that my choice has way better iat's that the factory box. so im happy with my choice also

hopefully they can do a cai test V2 sometime in the future with the brands that didnt make it this time

[SS-screamer]

My Roto-fab was easy to install, has proven HP gains over the stock and looks damn nice when I open the hood for people. I, for one, am happy with my choice and have ZERO regrets with my purchase.

Thanks for a great product.

[axis]

Originally Posted by camaro1

i wish that the brand cai that i have could have had one there for testing, but it isnt going to change my mind, i know from data logging that my choice has way better iat's that the factory box. so im happy with my choice also

hopefully they can do a cai test V2 sometime in the future with the brands that didnt make it this time

Seeing that your BWoody appears to the exact same thing as fastlane's, i'd assume they perform about the same. It's a shame that it's even more expensive than Fastlanes when you add the waterbottle. Fastlane includes the WB with their kit.

I just don't get these types of CAI's being considerably more expensive. They forgoe the cost of a enclosure and time spent working out the dimensions to get a good fit, then stuff the filter down the hole further, yet charge you more for it. If anything, they should be cheaper. An extra mandrel bend and 6+in of tubing shouldn't cost you $100 more.

I do like that you can buy the WB only from them, although not sure if that's a decent price or not. Swapping the WB on most, if not all, of the other kits would net even more gains as it lets in more cold air.

[Aceman74]

Originally Posted by kelleyperformance

its not about just the peak HP made... i could understand wanting a fastlane becase it takes 100% of its air from outside the engine bay. for example, with a blower 2-10 hp quickly becomes ALOT more. so if all these were tested on a cammed car or a FI car, there would be more signifigant differences.

How can the Fastlane kit draw 100% from outside the engine bay. Not trying to be combative like others have been here but there is no clear picture showing me that section. Does anyone who owned a mustang remember the March Ram air kit that had a box covering the air filter and a ram air duct that mounted below the car to draw air into the air box. If the Fastlane kit does that then I would see how you are actually drawing in air from outside the car. Again I'm not clear on how it fits or where exactly it goes so I am asking to see some pictures. I've seen a 35HP gain on my CAI with a tune so anything can be made better but this was a test between box stock kits on a box stock car right?

[JANNETTYRACING]

Originally Posted by camaro1

i wish that the brand cai that i have could have had one there for testing, but it isnt going to change my mind, i know from data logging that my choice has way better iat's that the factory box. so im happy with my choice also

hopefully they can do a cai test V2 sometime in the future with the brands that didnt make it this time

Given the attention and feed back V1 has created I would be happy to do V2 as you call it.

[defragme]

Originally Posted by HokieERVet

ok...I'm really confused now...

Positive trim= computer adding more fuel = using more gas

right?

so, not backwards?

Sorry...I'm a vet...not used to these metallic animals

You should go back to page 6 of this thread and read my post on the fuel trims, I think it might help you...?

[HokieERVet]

Originally Posted by defragme

You should go back to page 6 of this thread and read my post on the fuel trims, I think it might help you...?

thank you...that was perfect.

Thanks!

[Halltech]

Originally Posted by JANNETTYRACING

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.

The 14.7 ratio is stochiometric for gasoline (100%) only. What is really unfortunate, is that all US cars have their ECMs set (except for FF Vehicles) at this closed loop setting, when in fact most states now pump E10 or 90% gasoline/10% ethanol. The stoichiometric value for E10 (theoretically correct chemically correct burn) is actually 14:1 not 14.7:1.

In closed loop, the ECM is getting long term fuel trim information from the O2 sensors, and attempts to set the injector pulse width to correct the MAF meter estimated air. Since it is always seeing additional O2 left over in the 14.7:1 burn, it is in correction mode continuously.

Anywhere from -5 to +5 trims are fine, but when they start reaching +or -12% tuning should be in order to bring them back to the baseline as close as possible. Once they hit +25%, meaning the MAF meter estimated X amount of oxygen, but X+Y ended up post combustion at the O2 sensors, you will pop P0171 and or P0174 lean codes.

I have a Snapshot here of EFI Live's Tuning page for the Camaro showing the throttle position whereby the ECM switches from closed loop (14.7:1) to open loop, which is the commanded A/F ratio fuel enrichment code tables. These are the tables which most tuners access to lean out Open Loop only. Note that the LS3 in the Camaro is in closed loop at all rpms until you are at 25% throttle position.




Tomorrow, if I have the time, I will post the open loop PE/RPM code to illustrate how the tables are used by the ECM to command a specific air fuel ratio in open loop.

I have tuned over 450 Z06s, and LS3s over the past 4 years, and many C5s before that, and have always changed the stoich and open loop values based on the local fuel available. Here in Wisconsin, I tune every car for E10. I have been tuning GM Corvettes, and GTOs, trucks for 7 years now, and Katech Engine Development Halltech's e-mailTune® for their Track Attack and Street Attack engines in locations where their customers do not have geographical access to their services, but need remote tuning for cams, and other mods.

Jim Hall

[joelster]

Ted-any chance you can go back and re-dyno a few of these kits to see if any of the runs were flukes or not? I suggest doing the Hennesey and the Fastlane again back-to-back if possible.

I think some of you guys may also be interested in knowing that installing headers and a free-flowing cat-back will also affect the afr of the engine as well. I seriously doubt that anyone will just install a CAI kit and call it quits with only that one mod.

[JANNETTYRACING]

Originally Posted by joelster

Ted-any chance you can go back and re-dyno a few of these kits to see if any of the runs were flukes or not? I suggest doing the Hennesey and the Fastlane again back-to-back if possible.

I think some of you guys may also be interested in knowing that installing headers and a free-flowing cat-back will also affect the afr of the engine as well. I seriously doubt that anyone will just install a CAI kit and call it quits with only that one mod.

If I had the slightest feeling that any of the test were flawed I would gladly go back and do them again.

I am sorry but I don't feel that there were any mistakes made in the testing everything went very smooth.

I am confident I can reproduce the results without issue.

The results are easily explained as well, I have taken this up the the manufacturers in private.

I have not had the opertunity to discuss with Hennessy just been too busy but I am definatlely going to make an effort this coming week.

Ted.

[97one]

Originally Posted by franknbeans

I attached a picture for you dudes at work.

Thanks..................