J30 K&N Air Cone installation

[heybilly]

OK heres the thing... I just installed a K&N airfilter cone in place of my stock airbox. Now my question is should i leave the bottom half of the stock airbox installed to direct more outside air to the filter or should i just keep the entire box out?

[maxnix]

Sad to say, if you had read the previous posts, you may not have spent money to degrade the performance of your car.

Best thing is to return it to stock with the stock air filter.

[Eswift]

wow, thats a small K&N. I wonder if the surface area of that frustrum is even as much as the stock paper filter.

In any case, you would be best off fabricating a cordoned-off section of your engine bay so that the filter sucks air from the stock location under the headlight. use some door gasket stripping to so that the divider makes a seal with the hood. Otherwise, you aer just sucking in HOT air, and will result in the degraded perfomance brian is speaking of.

[heybilly]

So for now i should put the bottom half of the air box back in, right??? Car seems to perform alot better now how it is and the sound that comes out of this thing kinda sounds ricey - me like.

[diamondj30]

you dont have a box to cover up the sucking noise.

[Q45tech]

When you MEASURE and count the ~~~~~~~~~~ oem filter and find the surface you will find the oem has more filter area............why the oem paper only has a 2" HG vacuum differential vs the 1.4" HG of the K&N cotton gauze..................the CFM on the 3 liter is so low........only 270 CFM for 225 HP.

[madmax88]

maybe you save in weight ,lol.

[landtodd]

People are trying to tell you to abandon the K&N. By drawing heated underhood air this summer, it will cause you a net LOSS of hp.

[madmax88]

sorry but any one have pic of a cooled air intake for J30? CUSTOM I MEAN.

[Eswift]

People are trying to tell you to abandon the K&N. By drawing heated underhood air this summer, it will cause you a net LOSS of hp.

it would be fine with a cold air box so that heat-soaked air didnt enter the filter, as i said earlier. you can also run pipe through the 2" hole in the sheet metal right by the headlight and locate the filter behind the turb signal and in front of the front tire.

[Eswift]

When you MEASURE and count the ~~~~~~~~~~ oem filter and find the surface you will find the oem has more filter area............why the oem paper only has a 2" HG vacuum differential vs the 1.4" HG of the K&N cotton gauze..................the CFM on the 3 liter is so low........only 270 CFM for 225 HP.

the stock filter does have larger filtration surface area than that particular K&N. A correctly sized (larger cone) K&N can easily surpass the surface area of the OEM filter.

In any case, it has been proven that even the correct application of a K&N filter will only provide a little extra growl. "correct application" means the intake air is NOT the air from the engine compartment. negligible HP gains for a NA 3000 cc engine. Would prove VERY useful for forced induction on an engine of this size.

PS: inches of Hg is the most worthless measurement of pressure available....they really need to revoke its use.

[Eswift]

sorry but any one have pic of a cooled air intake for J30? CUSTOM I MEAN.

i used to have one as previously described in my lower bumper. sorry no pics. Now its back in the engine compartment awaiting construction of a CF cold air box....

[madmax88]

I like to see this o well , how much would a man pay for this?

[Eswift]

if youre handy, just buy maybe 40$ parts depending on materials used, and $50 filter, hour or two of work.

[madmax88]

thank anyway ESWIFT

[madmax88]

SO IF SOME ONE WOOD DO IT FOR LETS SAY FOR $300.00 C.A.N. IS GOOD?

[VimyJ]

Maxx, you crack me up, eh? Do it yourself (DIY) and have some good clean cheap fun.

[madmax88]

thanks dimyj oh i mean Vimyj L>O>L

[madmax88]

dont worry you r cool ViimyJ