Changes sound levels more than HP\TQ. I doubt you would see over a 4-5HP increase. A lot of R&D goes into these for max efficiency and low noise.

 

Cold air intakes are claimed 4-15 HP depending on the application.

They will make more noise and generally add more higher rpm HP and not much feel.

I had one on my Sonoma and it did increase 1 mpg but not much in feel.

Today’s computers also have learn features this notice changes and often negate any improvement over time. The computer tried to retain the factory emissions settings unless it was tuned out. I am not sure on our trucks but my last GM vehicle needed the learn feature removed to retain the elevated boost levels.

KNN has dyno results on their web site. They are legit but remember 10 HP is not going to feel like 55 HP.

I am skipping it this time around.

The intakes are better on some vehicles than others from the factory So gains rather vary. Space and drive by noise baffling all play a roll.

The biggest gain in most cases is colder air in the intake air fuel to reduce knock. But that depends we’re the factory is picking it up already.

 

KNN has dyno results on their web site. They are legit but remember 10 HP is not going to feel like 55 HP.

I am skipping it this time around.

The biggest gain in most cases is colder air in the intake air fuel to reduce knock. But that depends we’re the factory is picking it up already.

Yes, why is it most of these things get the air from under the hood (hot)? The factory gets it from outside the front fender. Shouldn't we call them "hot air intakes"?

I think K&N's numbers are legit. BUT I would be willing to bet those numbers are hand picked dyno runs on a cool engine with the hood up. And like you said, you can't feel 3 hp at 5500 RPM. In fact, you can't feel 100 hp at 5500 RPM if you don't drive around in 2nd gear on the freeway. What good is a few hp at wide open throttle at high RPM? Really? But man it sure SOUNDS faster. Like tons of things in this world, the placebo affect is incredible.

 

I seriously doubt you will find much of these, probably because the before and after numbers are virtually the same. Just my guess.

 

Another thing to note is that power is an operation of getting oxygen + fuel in to the engine and back out.

Air density is the theory behind "cold air intakes", with cooler air being more dense, hence having more oxygen, etc.

The factory intake systems are designed to pull air from the most efficient location (coolest available air, usually through the fender).
The factory filter is designed to provide adequate filtration for the engine itself and it's components (including sensitive sensors).

The issue with aftermarket is that factory already pulls from the coolest available air and the filters usually provide less filtration (to be less restrictive).
In recent years the only gains to really be had without sacrificing filtration quality is in the intake tube - straighten out or ease angles on curves and smooth the path. This provides less restriction, but also increases intake noise which can be a negative for the average consumer.

 

I have the 2.5 4 cyl. with AEM Cold Air Intake System 21-8035DC

Yes the website shows the dyno curves, yes I get 1 increased MPG (ish), yes I have the drone ! As for torque …. its a 4 cyl, they don't come with torque

 

Google the camaro v6 forums. They are way ahead of us on motor stuff.
There is a great thread where s few guys and a shop pooled money and dynod all the popular intakes on the market and then posted the results.

Not bad gains at all.

I bought the factory gmpp intake because of it.

I don’t have the link, but search it out, should be fairly easy to find.