CAI vs. AAI
Team Owner
Joined: Dec 2008
Posts: 35,874
Likes: 1,600
From: Honolulu HI
Those are the same thing...a true CAI is one that ingests ambient (outside) air. An open element intake will ingest hot under hood air if it’s not isolated from that hot air, which will result in elevated IAT’s, which then causes the car to pull timing and subsequently a reduction in power.
Le Mans Master
Joined: Oct 2014
Posts: 8,662
Likes: 2,722
From: Atlanta GA
I agree... go with a VARARAM, its the only true CAI that pulls in ambient air from in front of the car as most of the others pull air from the area between the shroud and the radiator ...
you will be surprised at how much timing starts to get pulled by the ECM above 85 degrees
Dave
Last edited by Dcasole; Sep 15, 2018 at 10:55 PM.
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 1,089
Likes: 82
From: Kauhava, Finland
Very well then...but it seems that even with stock system (albeit in a Camaro) IAT temps seem to go down..
Anyway, could someone explain why AFR goes as low as 10 in this comparison for some of the CAI kits? Cat overtemp protection or hugely positive LTFT's perhaps?
It would have been nice to see HPTuners logs in this comparison, I guess..
http://www.superchevy.com/how-to/100...amaro-intakes/
Anyway, could someone explain why AFR goes as low as 10 in this comparison for some of the CAI kits? Cat overtemp protection or hugely positive LTFT's perhaps?
It would have been nice to see HPTuners logs in this comparison, I guess..
http://www.superchevy.com/how-to/100...amaro-intakes/
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,104
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Very well then...but it seems that even with stock system (albeit in a Camaro) IAT temps seem to go down..
Anyway, could someone explain why AFR goes as low as 10 in this comparison for some of the CAI kits? Cat overtemp protection or hugely positive LTFT's perhaps?
It would have been nice to see HPTuners logs in this comparison, I guess..
http://www.superchevy.com/how-to/100...amaro-intakes/
Anyway, could someone explain why AFR goes as low as 10 in this comparison for some of the CAI kits? Cat overtemp protection or hugely positive LTFT's perhaps?
It would have been nice to see HPTuners logs in this comparison, I guess..
http://www.superchevy.com/how-to/100...amaro-intakes/
Melting Slicks
Joined: Jul 2005
Posts: 2,990
Likes: 346
From: Mt. Pleasant S.C.
I agree... go with a VARARAM, its the only true CAI that pulls in ambient air from in front of the car as most of the others pull air from the area between the shroud and the radiator ...
you will be surprised at how much timing starts to get pulled by the ECM above 85 degrees
Dave
Le Mans Master
Joined: Oct 2014
Posts: 8,662
Likes: 2,722
From: Atlanta GA
have you ever logged IAT's with it ??
I have with my VARARAM ....
Dave
Melting Slicks
Joined: Jul 2005
Posts: 2,990
Likes: 346
From: Mt. Pleasant S.C.
Yes, It reads a degree or two over ambient as long as I am moving. That duct moves more air than I guess you give it credit for.
Last edited by Sox-Fan; Sep 16, 2018 at 07:15 PM.
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Le Mans Master
Joined: Oct 2014
Posts: 8,662
Likes: 2,722
From: Atlanta GA
Maybe so ,thank u !!
it is the first time I have heard that someone has logged IAT's with another brand , and most other brands are pulling air from between the shroud and the radiator ... some really hot air ...
Dave
it is the first time I have heard that someone has logged IAT's with another brand , and most other brands are pulling air from between the shroud and the radiator ... some really hot air ...
Dave
Racer
Joined: May 2017
Posts: 406
Likes: 96
From: Seattle WA
Those are the same thing...a true CAI is one that ingests ambient (outside) air. An open element intake will ingest hot under hood air if it’s not isolated from that hot air, which will result in elevated IAT’s, which then causes the car to pull timing and subsequently a reduction in power.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,104
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Sure, and it'd be the same with the OEM housing after driving a short way. The whole point of a CAI is to get ambient air to the engine from a dead stop to WOT without having to suck in hotter air first, which pulls timing and reduces power. If you never go WOT at less than 30 mph, a CAI is nearly useless.
Racer
Joined: May 2017
Posts: 406
Likes: 96
From: Seattle WA
Sure, and it'd be the same with the OEM housing after driving a short way. The whole point of a CAI is to get ambient air to the engine from a dead stop to WOT without having to suck in hotter air first, which pulls timing and reduces power. If you never go WOT at less than 30 mph, a CAI is nearly useless.
Le Mans Master
Joined: Dec 2005
Posts: 6,994
Likes: 1,679
From: Southeast TX
The stock air box is actually quite good at flowing air. At least on an LS3. At 660+ rwhp, it shows 0 vacuum between the filter and the throttle body running full tilt. Intake air temps are what you need to be concerned with. Not how much flow is available.
Racer
Joined: May 2017
Posts: 406
Likes: 96
From: Seattle WA
Not to hijack the thread, but if that's the case, would a heat-shield such as the following help:
https://www.halltechsystems.com/Hall...beehive400.htm
https://www.halltechsystems.com/Hall...beehive400.htm
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,104
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Not to hijack the thread, but if that's the case, would a heat-shield such as the following help:
https://www.halltechsystems.com/Hall...beehive400.htm
https://www.halltechsystems.com/Hall...beehive400.htm