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If you actually over oil a K&N filter you have no business attempting to change it yourself in the first place or even attempting to work on your car or any car.
We're talking about Americans here, where if a little bit is good, a lot HAS to be better.
If you actually over oil a K&N filter you have no business attempting to change it yourself in the first place or even attempting to work on your car or any car.
Agreed, but even done correctly, you're getting little or no benefit.
I’ve tried aftermarket air filters in the past, (specifically K&N) and I did not feel a “seat of the pants” improvement. For me, spending a couple hundred (maybe a few hundred) dollars, not feeling a difference, and having the possibility of warranty denials is simply not worth it to me. YMMV.
Here are screenshots grabbed from the “MAKING THE FIRST EVER C8 CORVETTE CUSTOM EXHAUST!!! *COMPLETELY TORN APART!*” video by Street Speed 717. You can see the process for removing/swapping the air filter is pretty straightforward, and the engine will not need to be dropped, reinforcing the theory that GM designed the C8 for easy servicing. Hope this is helpful when it comes time for a new air filter!
Ok, so i will be removing the screws and using velcro to keep this cover in place. Forget having to unscrew 25 different screws on 2 covers any time i want to get at the filter!
Ok, so i will be removing the screws and using velcro to keep this cover in place. Forget having to unscrew 25 different screws on 2 covers any time i want to get at the filter!
Scheduled replacement at 45,000 miles, probably take most owners 22 years to get there. I'm good with a few bolts.
I’ve tried aftermarket air filters in the past, (specifically K&N) and I did not feel a “seat of the pants” improvement. For me, spending a couple hundred (maybe a few hundred) dollars, not feeling a difference, and having the possibility of warranty denials is simply not worth it to me. YMMV.
I posted 4 pages of technical LAB air flow info from K&N in an appendix on this PDF on why modified throttle bodies work: http://netwelding.com/Soler_Mod_TB.pdf
It's a bit technical to read and don't expect some of the "Vocal Minority" posters who don't accept you can have lower restriction filters as Tadge mentioned will. BUT some of the many "Silent Majority" visitors who the Thread who are interested might!
No you won't "feel" ~10 hp (which a poster using the aFe paper filter obtained in a dyno test versus the somewhat higher aFe showed of the ~15 hp dyno tests with the lower restriction oil cotton or with the LT4 it was sufficiently lower restriction than some needed a tune. BUT unless your "hard of hearing" you can't miss the loud "sucking sound" that is almost as loud as they exhaust. But then if you spent $1195 for NPP you got noise and 5 hp you also didn't feel!
Doesn't look much more difficult than the C7! Done that a number of times. Once removing the OEM filter on my 2014 Z51; 2) installing the aFe low restriction filter system on my 2014; 3) then removing the aFe system when I sold the 2014; 4) installing the OEM system back on my 2014; 5) removing the OEM filer and system on my Grand Sport; 6) installing the removed aFe system on my Grand Sport (after cleaning the oiled cotton filter.)
Yep will change the C8 OEM filter and if I see I think there is benefit of installing an aftermarket filter, beit the high sucking sound I get now at WOT, or slightly more power- will install one!
Yeah, it's probably not much more difficult than the C7. I was shocked at how much had to be unfastened to get to the air filter on my old Stingray. The aftermarket filters don't require cleaning so it sounds like a good plan.
^^
Depends on which filter you get. Flow with the same size as OEM in paper won't get much restriction reduction. Oiled cotton will usually provide lower restriction and you can clean more often that the ~30,000 miles you'd change an OEM filter, that by than will have more restriction. But you can just clean them about when you would change an OEM paper filter- it's your call! The downside is most low restriction oiled cotton filters (that are not larger and does not look like the C8 can handle a larger filter) will not filter as small a particle. Like most things in life, there are always compromises!
Ok, so i will be removing the screws and using velcro to keep this cover in place. Forget having to unscrew 25 different screws on 2 covers any time i want to get at the filter!
LOL! 10 Corvettes and I've never changed an air filter on any of them. It would take less time to reinstall the little screws than it would to trim, align, and place velcro tabs as you have suggested.
Cool to see.... not terribly hard. Going to be interesting to see what the aftermarket tries to sell to Corvette guys who believe in the "ram air" myth when the intake already draws fresh air in from each side inlet and the filter is large.
I battled the "ram air myth" way back in 1999, getting in heated discussions with a well-known Forum vendor who had all sorts of wild claims back then with his line of C5 products.
I lost the battle, so I took my engineering degree and left the battlefield. I was forced to admit that at 199 mph there probably was a ram effect, but I would not crater on the "laminar flow" bullshit.
I battled the "ram air myth" way back in 1999, getting in heated discussions with a well-known Forum vendor who had all sorts of wild claims back then with his line of C5 products.
I lost the battle, so I took my engineering degree and left the battlefield. I was forced to admit that at 199 mph there probably was a ram effect, but I would not crater on the "laminar flow" bullshit.
Yep NHRA Prostock engines benefit slightly from very carefully designed intake scoops at 200 mph!. Used to be on top of the hood feeding two massive carbs now they are bottom feeders into fuel injection. But every little bit helps in those ~1500 hp 500 cid NA engines!
If you can turn a screw you can change this filter. Taking a C8 to a dealer for this would be like calling a registered electrician to change a light bulb. This is not a 911 where you have to remove the entire rear fascia/bumper cover to change that filter.
Way back in bicycle days we had customer come for a new inner tube. She said, "my husbands a brain surgeon and cant change a lawn mower spark plug." She was dead serious, he really was a brain surgeon.
Wrong! If more is good, then TOO MUCH is just right!!
Your comment is similar to one I use in my training material! I have a part time Internet business reducing shielding gas waste. Many welders feel the same and set excess flow that not only wastes gas but causes turbulence that pulls air into the shielding gas stream! I have a lock that can be put on the flowmeter control **** and other products that cut gas waste!
^^
Depends on which filter you get. Flow with the same size as OEM in paper won't get much restriction reduction.
I'd bet much of the gain in your aFe was due to the size. From the picture it looks significantly taller and wider. There is a big increase in surface area to pull air through. On the flat filters that are the same size as stock such as the C6, it's hard to find evidence of a repeatable HP gain from drop-in aftermarket filters.
^^^ It's a combo that requires a larger filter housing and they have a large smooth bend intake air intake tube. As you note, the filter is longer and wider. Also they show flow data at 1.5 inches of water pressure differential of: OEM = 224 CFM; their larger Oiled Cotton = 318 CFH and they also have a paper filter, the same size as the oiled cotton with ~275 CFM. So it's a combo of materials and size. Probably the issue with the GM introduced system that was paper and looked to be the same size filter as the OEM.
From my experience with oiled cotton it definitely has a luuder "sucking sound" at WOT. As far as the potential oil issue, done properly won't even fell oil. When you get the filter it's preoiled and does not feel at all oily.
I clean the filter with the recommend solution and then low pressure, low flow rate water from an outdoor faucet. Let it dry ovenoght. Then put a thin line of supplied oil only on the outer top of each ridge. It's colored and you will see how far it wicks down in about an hour. Then in areas that aren't colored, usually some at the bottom of the ridges, put a drop or two more oil. In another hour it's all colored BUT does not feel oily.
03-11-2020, 11:53 AM
It's a combo that requires a larger filter housing and they have a large smooth bend intake air intake tube. As you note, the filter is longer and wider. Also they show flow data at 1.5 inches of water pressure differential of: OEM = 224 CFM; their larger Oiled Cotton = 318 CFH and they also have a paper filter, the same size as the oiled cotton with ~275 CFM. So it's a combo of materials and size. Probably the issue with the GM introduced system that was paper and looked to be the same size filter as the OEM.