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Hey All, new member here, I just joined the Corvette family back in February of this year when I purchased a '23 Stingray 3LT. I traded in a Hellcat for the C8, and I must say the 'Vette is the best car I've ever driven and owned, hands down. I'm an avid NHRA bracket racer and I love racing the car on the weekends. It has taken me some time to figure things out but I'm having some success with it. I wanted to share with the community about a phone call I had the other day with an aftermarket guy who does all of the flow bench testing with the company he works for. I can't remember his name, but I wouldn't tell it anyway because he wouldn't deserve any negative feedback from anyone because of something I said. However, what he told me to try worked, and I do mean it worked and works well. I mentioned to him that I didn't want to pay hundreds of $$ for an air intake for an extra 10 HP, it just wasn't worth it to me. This dude chuckles and said he agreed with me, and he's in the business of selling air intakes and other fast goodies. So, he says "Take the cover off the air box, you can strap the air filter in place if you like, but it doesn't really need it, it ain't goin' nowhere." He says that when he flowed the C8 LT2 with the air box cover off, it flowed 6-7% more than when the cover was on it, and it won't throw a check engine light. The first thing I did when I got off the phone with this dude is take the cover off the air box, let the filter do it's thing, no strap needed, then hit the street with it. If you do the math, 500HP x .06 or .07 and you get 30-35HP doing a little labor of your own. You can feel the difference in the seat of your shorts (I live in FL, we wear shorts), the damn thing is a rocket ship. I put some Nitto 555R2s on it and now it doesn't spin after launch. Best time to date is a 7.24 in the 1/8th DA 2000', leaving off launch control at 3500rpm in the Pro class. I run in two weeks at Gainesville, the DA will most likely be worse because of the heat, but we'll see what it does with the air box cover off. There's one side note to this, I notice that when cruising down the interstate at 80mph you can hear a slight drone when the engine is running on 4cyl, but that sound goes away as soon as the other 4 lungs kick in to help out. Free HP is a good thing, so I wanted to share that info with y'all. If this has been posted already then please forgive me. Y'all take care...
You're not getting 30hp taking out the air filter. The only way you're making more HP is by changing VE. You're not doing that by removing the air filter. if it were that simple everyone would be running around with no air filter. Also you're not feeling any difference, pure placebo. If we take the snake oil salesman's word the 7% increase... at what rpm? What cfm magically is achieved? At what temperature? Etc....
You're not getting 30hp taking out the air filter. The only way you're making more HP is by changing VE. You're not doing that by removing the air filter. if it were that simple everyone would be running around with no air filter. Also you're not feeling any difference, pure placebo. If we take the snake oil salesman's word the 7% increase... at what rpm? What cfm magically is achieved? At what temperature? Etc....
I didn't say take out the air filter, I said take the cover off of the air filter box, but leave the air filter on. Guys like you are the reason I didn't mention the dude's name I talked with, because of your 'snarky' response. What RPMs do you think he would be talking about, idle? C'mon man, you'd think the numbers he talked about would be at the higher RPMs, no? As far as what I feel in the care when I mash the gas, take your 'placebo' comment and stick it up your ****. According to your user name, I guess you're a tuner? Try it out first, you know...like before you spout off, and let me know what you come up with the next time you do some flow numbers on a C8.
hey all, new member here, i just joined the corvette family back in february of this year when i purchased a '23 stingray 3lt. I traded in a hellcat for the c8, and i must say the 'vette is the best car i've ever driven and owned, hands down. I'm an avid nhra bracket racer and i love racing the car on the weekends. It has taken me some time to figure things out but i'm having some success with it. I wanted to share with the community about a phone call i had the other day with an aftermarket guy who does all of the flow bench testing with the company he works for. I can't remember his name, but i wouldn't tell it anyway because he wouldn't deserve any negative feedback from anyone because of something i said. However, what he told me to try worked, and i do mean it worked and works well. I mentioned to him that i didn't want to pay hundreds of $$ for an air intake for an extra 10 hp, it just wasn't worth it to me. This dude chuckles and said he agreed with me, and he's in the business of selling air intakes and other fast goodies. So, he says "take the cover off the air box, you can strap the air filter in place if you like, but it doesn't really need it, it ain't goin' nowhere." he says that when he flowed the c8 lt2 with the air box cover off, it flowed 6-7% more than when the cover was on it, and it won't throw a check engine light. The first thing i did when i got off the phone with this dude is take the cover off the air box, let the filter do it's thing, no strap needed, then hit the street with it. If you do the math, 500hp x .06 or .07 and you get 30-35hp doing a little labor of your own. You can feel the difference in the seat of your shorts (i live in fl, we wear shorts), the damn thing is a rocket ship. I put some nitto 555r2s on it and now it doesn't spin after launch. Best time to date is a 7.24 in the 1/8th da 2000', leaving off launch control at 3500rpm in the pro class. I run in two weeks at gainesville, the da will most likely be worse because of the heat, but we'll see what it does with the air box cover off. There's one side note to this, i notice that when cruising down the interstate at 80mph you can hear a slight drone when the engine is running on 4cyl, but that sound goes away as soon as the other 4 lungs kick in to help out. Free hp is a good thing, so i wanted to share that info with y'all. If this has been posted already then please forgive me. Y'all take care...
You're not getting 30hp taking out the air filter. The only way you're making more HP is by changing VE. You're not doing that by removing the air filter. if it were that simple everyone would be running around with no air filter. Also you're not feeling any difference, pure placebo. If we take the snake oil salesman's word the 7% increase... at what rpm? What cfm magically is achieved? At what temperature? Etc....
I don't disagree with you, but he didn't remove the air filter. Try reading the post again.
Without the specifics of how the test setup was done it is hard to determine if the 6%-7% flow increase is applicable to the whole system. But even if there was a 6%-7% flow on the bench it doesn't account for real world conditions where hot air can enter the system, etc. The only way to know for sure if it helped would be A-B timed runs or a controlled dyno comparison.
There is also the staggering misconception that a 7% increase in airflow = a 7% increase in power. Nope. That's even if it did increase flow that much.
Same result, maybe. But not remotely the same action. And you're still not understanding what he wrote. He didn't remove the airbox, either. In any case, improving airflow WILL increase HP. Whether removing the airbox COVER significantly improves airflow I have no idea. Neither do you.
Same result, maybe. But not remotely the same action. And you're still not understanding what he wrote. He didn't remove the airbox, either. In any case, improving airflow WILL increase HP. Whether removing the airbox COVER significantly improves airflow I have no idea. Neither do you.
My counter to that is by removing the airbox cover you are now taking the air from the engine compartment vice the side scoops supplying cool air. The Musch increased temp of the air will reduce the aid density. My guess is that it would be a net Loss of power. HOT air bad
Free HP
