gpruitt54

I bought a C6 with a stock air intake. Been thinking about adding a cold air intake. Do these actually add HP (Horse Power)? Which ones are better at actually adding Horse Power to the car?

jim2092

Cooler air into the intake is rewarded by the engine control module with more fuel and timing hence more horsepower. This forum is loaded with cold air intake reviews.

gpruitt54

Yes, I know. Many, if now all are full of personal preferences based on products already bought and installed. I was looking for choices based on performance data and maybe a few product recommendations.

jim2092

This will keep you busy.

https://www.corvetteforum.com/forums...for-my-c6.html

HOXXOH

https://www.corvetteforum.com/forums...omparison.html

Nuff said.

ztheusa

The air isn't any cooler....................zero!

jaredtxrx

What motor do you have?
Do you have any other modifications?
Do you have a tune?
Do you plan on adding anything else other than a new air intake?

HOXXOH

The whole point is that it isn't hotter.

gpruitt54

Do you have any other modifications?

Do you have a tune?

Do you plan on adding anything else other than a new air intake?

timd38

They make more air intake sound so you feel like the car is faster.

jaredtxrx

Since you didn't answer the "Which motor you have?" I will give you a couple of opinions.

If you have an LS3 (08+) I would not touch the air intake. It just isn't cost effective on an LS3 with a tune and exhaust, the results will be marginal at best. If you have an LS2 that is a different story, and by all means go for it.

You will get much more bang out of the intake with a tune. I would plan on trying to do these as close together timeline wise as possible.

sevinn

It isn't really about making HP, it's about keeping what you have and not losing timing due to high intake temps.

Mike's LS3

Exactly! It's not what you gain, but what you gain to lose.

HOXXOH

It doesn't sound like you plan to get serious about power, so try starting with the $2 shroud prop without a tune and later changing to NPP style mufflers before you do the tune.

Gather parts: 2 pcs 1/4-20 threaded rod about 6" long, 4 pcs 1/4 x 1 fender washer, 8 pcs 1/4-20 hex nut

Prepare the props: Divide the parts to create two assemblies. Put two nuts about 1" to 1 1/2" in on each rod and tighten against each other (jam nut) and add a washer. Put two more nuts on the other end of each rod and run them loosely leaving about an inch space from the first pair and then add a washer.

Open the shroud: Pop the two plastic snap pins out at the bottom front of the shroud. They're equally spaced about 6" from the centerline and attach the shroud to the front vertical metal plate. Pry the center locking pin out about a half inch and then pull the whole pin out. Push the bottom of the shroud toward the radiator.

Install the props: While holding the shroud open, put a rod with the most thread showing (it should be about 3" worth) into the hole where the pins were in the metal plate, then put the short end into the mating hole on the shroud. Repeat on the other side. You should now have both assemblies in place and the shroud propped open about 1"-1 1/2". Now run the frontmost loose nuts toward the front of the car until you get the open space of the shroud where you desire. I'd suggest somewhere in the 2 1/2" to 3" range. When you get the opening desired, spin the remaining loose nut to the front and tighten it, jam nut style, to the other nut.

That's it. It takes longer to read this than to do it. Obviously reverse the process to restore the shroud to the stock location.

Enjoy the newfound power, but also be aware that some of the dirt etc that would have been stuck in your radiator/condenser will now be on your engine. If you are creative enough, you can seal off the upper part (above the air filter) of the opening to stop the dirt and effectively force the air through the filter.

mellojoe

Honestly, it probably adds 4 to 5 hp. But, at the same time, error bars on dyno pulls is in the same 4 to 5 hp neighborhood. So, while technically it probably adds power, you'll never see it by itself. You could see that same power gain by doing a new dyno pull on a different day. Heck, you could do a baseline, then swap intake, then do another dyno pull and show less power because of the variance.

nobucks

yep, just like loud mufflers

nobucks

yea, now your talking , was looking at the same idea, thanks... did it really help ?

nobucks

so if you open up the shroud you would get hot air directly from the radiator , you want cold air ,, would duct the air from the side fender well or under the car ? does the computer adjust fuel ratio /timing by air temp.. i live in southern inland empire california , hot & dry ,

HOXXOH

I think you need to open the hood to see where the air flows before and after it passes through the radiator. If you want a real eye opener, tape 4" long pieces of yarn at various places in the engine compartment and video the direction they point while sitting still and at different speeds. You'll be baffled. (no pun intended)

Check this link. https://www.corvetteforum.com/forums...post1586336347

BTW, it doesn't get much hotter & drier than the Arizona deserts. It's why auto manufacturers from around the world, have their hot weather testing facilities here.

nobucks

have you done this ? and your point is ? i agree, GM fully knows what they are doing, love GM, never drove anything but GM in my 56 years of driving , have 3 vehicles now , but someone wanted to open up the baffle in front of the air cleaner for more air flow , but i thought that would be direct hot air passing through the cooling fins , not really cooler air ,