Thread: Dyno Science: "CAI" Box vs Open Cone Intake

Here we go with the debate...its all about flow with these cars.

Take your ambient temps and run with em...I'll still win with my open cone

i just stickied this because i want everyone to read it.

This debate has been going on for years and as the numbers show its not that big of a difference.. Thank you to the OP for taking the time to put this together.

once you get moving the open cone cools down, its only when your stopped it gets pretty hot.

or you could just read the intake air temps (IAT's) in the maf if you have a tuner. most scan gauges should read this setting also.

also, for scientific purposes, i think time, how long it takes for the IAT's to come down after idleing would be helpful also.

Pretty sure the only temp the DIC ever reads is the outside air temp

that is excellent info...thanks for taking the time to do that!

that is the oil temp under oil temp in the dic, and it also reads the outside air temp.


i was pointing out the IAT's because well it already has something that your trying to do, and would probably be a little more on point. but also different maf's will read IAT's faster, so the results could be different based on different maf's.

you would need to get the temp sensor inside the air intake to get an accurate reading of what the intake is seeing.

I would think on the 04+ cars that the bellows would be the most restrictive point by far. It sure looks that way to me anyway.

sounds like we need track timeswith CAI FWI and Open Cone on the same car same day same temp for air and car. And that seems to be near imposible

Originally Posted by jacobmh27

sounds like we need track timeswith CAI FWI and Open Cone on the same car same day same temp for air and car. And that seems to be near imposible

Because it isnt the easiest thing to do to match 60 foot times...and get out of the hole the same as every other run.

Great post thanks for sharing, I was at the understanding 3.4 was a bit dangerous for the set up your running, I planned on running basically the same set up except I went headers for less head ache. But have you run into issues with knock what numbers are you seeing with this? I would much rather prefer dropping to a 3.4 as well but not at the risk of my motor cause if it blows Ill probably not fix it and put money down on a new car instead. Really great post though thanks for your contribution.

Originally Posted by footballplaya3k

I would like to see this with a WizAired and on a car that isn't knocking to death

What is the difference of a Thrasher and a Wizaird? A piece of aluminum foil? Cmon now guy