Unsulated Intake

[Mark-5.7]

Sorry, I mean Insulated. With Reflectix I insulated complete intake box & hose. I also bypassed the TB coolant hoses & picked up about .2 from 0 - 60. Anyone know what the upper intake filter is for & is it OK to remove it?

[RunItHard]

Originally Posted by Mark-5.7

Sorry, I mean Insulated. With Reflectix I insulated complete intake box & hose. I also bypassed the TB coolant hoses & picked up about .2 from 0 - 60. Anyone know what the upper intake filter is for & is it OK to remove it?

If you're talking about the mesh and filter material in the top of the stock box, it holds granulated carbon to trap vapors from the fuel evac system.

I cut mine out after I installed a K&N replacement filter, just before I trashed the whole stock box and installed a Volant CAI.

Depending on where you live, if you cut it out you won't pass your smog check to get your cert.

[guapo]

RunitHard,

IYO, is it really worth the cost to install a K&N cold air intake, what are the benefits. Would I really see an increase in mileage/performance or is it a personal preference. Also with these new K&N is it still necessary to recharge the filters.

[Havabier]

Originally Posted by guapo

RunitHard,

IYO, is it really worth the cost to install a K&N cold air intake, what are the benefits. Would I really see an increase in mileage/performance or is it a personal preference. Also with these new K&N is it still necessary to recharge the filters.

I put an AFI CAI on mine and made a noticeable difference. Sound is awesome too... Went with AFI instead of K&N after reading a lot of reviews...

I say... Go for it!!!

[Mark-5.7]

Originally Posted by RunItHard

If you're talking about the mesh and filter material in the top of the stock box, it holds granulated carbon to trap vapors from the fuel evac system.

I cut mine out after I installed a K&N replacement filter, just before I trashed the whole stock box and installed a Volant CAI.

Depending on where you live, if you cut it out you won't pass your smog check to get your cert.

Does the mesh thing affect emissions output or do you mean that they physically check the air box for this mesh filter? It seems like it would impede air flow?

[RunItHard]

Originally Posted by Mark-5.7

Does the mesh thing affect emissions output or do you mean that they physically check the air box for this mesh filter? It seems like it would impede air flow?

It doesn't effect emissions output so it won't be missed during tailpipe testing. It's there to trap fuel vapors from backing out through the intake and venting to the apmoshpere. However, some states are required to visually check all emission control devices are in place (Cali is one of the worst). So depending on where you live, they will check to see if the carbon filter is there. And yes, it does impede air flow somewhat.

[RunItHard]

Originally Posted by guapo

RunitHard,

IYO, is it really worth the cost to install a K&N cold air intake, what are the benefits. Would I really see an increase in mileage/performance or is it a personal preference. Also with these new K&N is it still necessary to recharge the filters.

A K&N flat panel replacement for the stock filter is good, a closed box CAI is better. I went with the Volant and it definitely increased my throttle response, added 8 to 12 hp (realistically), and increased my fuel economy from .8 to 1.2 mpg... When I can keep my foot out of it. It also sounds awesome! It really makes the engine growl when you drop the hammer.

It's a mandatory item if you plan on (or have) a cat-back or header/cat-back combo.

If anyone wants my K&N flat panel replacement filter for the stock 07/08 5.7 air box, I'll sell you the one I bought just before upgrading to the Volant. It only has 300 miles on it so it's basically brand new. $20 plus whatever UPS ground is. PM me if you're interested.

[Mark-5.7]

RunItHard, Thanks for the info. Just tailpipe check here in Colorado so that thing is gone. I PM'd you on the K&N.

[Codiac]

Originally Posted by RunItHard

A K&N flat panel replacement for the stock filter is good, a closed box CAI is better. I went with the Volant and it definitely increased my throttle response, added 8 to 12 hp (realistically), and increased my fuel economy from .8 to 1.2 mpg... When I can keep my foot out of it. It also sounds awesome! It really makes the engine growl when you drop the hammer.

It's a mandatory item if you plan on (or have) a cat-back or header/cat-back combo.

If anyone wants my K&N flat panel replacement filter for the stock 07/08 5.7 air box, I'll sell you the one I bought just before upgrading to the Volant. It only has 300 miles on it so it's basically brand new. $20 plus whatever UPS ground is. PM me if you're interested.

RunIt.....you still have the filter??? It is $12.30 to ship from a SLC zip to my zip in Montana.

[RunItHard]

Originally Posted by Codiac

RunIt.....you still have the filter??? It is $12.30 to ship from a SLC zip to my zip in Montana.

Sorry guys... The K&N flat panel filter I had has been sold.