1QUICK Z

Hey guys,

I just placed my order for my new 2015 Z06 (8-spd auto) last week and I have been doing a ton of research this past week. I am wondering if a simple K&N filter upgrade would be worthwhile since it seems like the factory "intake tube" is pretty efficient already? I have read the 50HP claims from AFE and Halltech and I'm certainly not bashing anyone, but isn't it reasonable to think a guy could grab a decent amount of HP by simply removing the factory (restrictive) filter? I guess I'm just not seeing the huge design difference between an aftermarket CAI and the factory set up, besides the filter, of course. The filter will cost $65 and the CAI units are between $600-$1200 (carbon fiber unit). What am I missing?

Thanks!

BTCorvette

I agree 100% in the facts you are bring to the table.... Why should I buy a $500 to $600 air box... When I can use my stock air box.. With a lower restricted air filter....

Please there got to be somebody out there who can a comparison test.., stock air vs after market air box .., with the only thing that is changed is the air filter... my guess is the results would be pretty much the same...,

1QUICK Z

Glad I'm not the only one who feels this way. I have no doubt the CAI units will produce more power, but if it's only 5HP and I have to pay an extra $530 to get it, I think I will start with the filter replacement. This car already has awesome power, but if we can find decent power gains from a filter replacement, seems like a no-brainer to me. Just seems like there has to be more to the equation. Most of the HP claims were with "No tune", so the stock unit is obviously pretty restrictive.

AZDoug

https://www.corvetteforum.com/forums...-question.html

This was one thread I was able to dredge up.

Doug

docf

I certainly am with you guys! Without tune, adding headers, reducing outflow restrictions ( exhaust, pipes) I doubt you are truly getting anything significant for your money. The engineers have spent megabucks on this model and it is very doubtful they missed air in with marked restriction.

BTCorvette

I see no real difference in the total design..., so the restriction of air flow is mostly coming from the stock paper filter... Just by changing the stock air filter should make the engine breath better..,

1QUICK Z

Exactly my point, but hopefully someone with first hand knowledge can jump in and either agree, or set us straight. Just seems like starting with a K&N filter (only) might be the way I am headed. I can upgrade to the CAI later "IF" I decide to really start modding the car. Not sure that I will need to? Sounds like the GM tuning is pretty weak. A good tuner can probably unlock a decent amount of power on these cars.

AZDoug

http://www.scribd.com/doc/23641356/I...max-Air-Filter

Doug

Hot Rod Todd

In addition to any gain the aftermarket plumbing would provide, the stock filter has much less exterior volume than the ones they are putting in the full intakes. I'm sure just changing the filter would help, but not so sure it would give you enough increased flow to lean out the mixture like the larger sized filter does. Even so if you could get 15-20 HP with the filter alone it could be worthwhile mod compared to the entire system. I'm sure someplace down the line a dyno test comparison will be done.

It would also be nice to not have to hear the "That's not stock!" comments. An aftermarket filter in the stock airbox is very Stealthy.

SBC_and_a_stick

That's gold. Thanks Doug. I've ran stock air filters for the last 6 years and I will continue to do so.

3 Z06ZR1

You guys seriously have your head in the sand if you even think a k&N filter is going to work as well with the stock intake and box.
As the halltech intake.
For one thing the Z06 (650hp) intake is the same one used on the (460hp) stingray.,
The halltech has 3 times the filter with a straight shot with a velocity
type stack inside a massive filter in a huge box..

1QUICK Z

[QUOTE=3 Z06ZR1;1589426805]You guys seriously have your head in the sand if you even think a k&N filter is going to work as well with the stock intake and box.
As the halltech intake.
For one thing the Z06 (650hp) intake is the same one used on the (460hp) stingray.,
The halltech has 3 times the filter with a straight shot with a velocity
type stack inside a massive filter in a huge box..
/QUOTE]

I certainly never said it would work "as well" as a CAI from AFE or Halltech. In fact, I was asking for someone to set me straight. I'm just trying to learn about my new car, but thanks for being so condescending. Must be nice to already know everything.

3 Z06ZR1

Condescending? What about all this clueless stuff.

The much large straight design is easy to see to start with, the stock tube has a large kink and is a lot more restrictive. Plus it comes from a 460 horse power car. A LOT smaller filter. Documented power on several dyno's. You guys can pretend it is not true.

1QUICK Z

Not trying to pick a fight. I don't even have my car yet. I was just looking at one at a dealer the other day and I was curious. I just sold my 650HP Magnacharged Camaro SS and I had a beautiful Cold Air Inductions CAI on it. I'm a believer in doing it right. When I see 'claims' of 35-50HP with only a CAI and no tune, it just got me to thinking. That's all. Have a great night.

KustomsbyKev

Why so angry?

C7/Z06 Man

Stock-------------= 242 cfm

AFE #54-74202= 303 cfm Note: Their oiled Pro 5R filter for their Z06 CAI. +25% air flow over stock. Thread Here.

K&N #E-0665-- = 312 cfm Note: OEM oiled Replacement, see K&N web site for flow rating, etc.

Halltech---------= 689 cfm Note: Their "high flow" oiled filter for their Z06 CAI. Thread Here.

3 Z06ZR1

Angry no just being real when there was shortage of it.

KustomsbyKev

I guess you can't communicate without putting others down! No one was arguing anything, just having a conversation. Relax

1QUICK Z

This is good info. I wonder why the Halltech unit is double the AFE? Is their tube and filter a lot bigger? Aren't both of these companies claiming about the same HP increase? Interesting

3 Z06ZR1

Communicated fine. Was pointing out the facts. Didn't put anyone down. A K&N in the factory box is not like a new halltech intake period.