Ive been doing some reading and heard from a couple honda guys that the factory airbox is best to use instead of an aftermarket intake. Ive heard that the Spoon cars use modified factory boxes. Can anyone shed some light on the subject for me?

 

i wouldnt say its the best...i'll give you an example, when i dynoed my old motor with the stock airbox it made 204 whp..i took the airbox of and installed a k&n filter and it jumped to 214 whp...

which one would you prefer???

 

I see.

How do the race cars "modify" their airbox? When I put the new motor in I want to make it way sleeper, thats why I ask.

 

It also depends on which airbox you are refferring to.

The ITR and S2k both have the resonators feeding from outside air, and acting similar to a comptech icebox. So basically an aftermarket filter is sufficient to breathe most street motors out there.

I know this image has been tossed around a ton, but this is the ITR vs GSR intake system comparison.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by myke &raquo;</TD></TR><TR><TD CLASS="quote">i wouldnt say its the best...i'll give you an example, when i dynoed my old motor with the stock airbox it made 204 whp..i took the airbox of and installed a k&n filter and it jumped to 214 whp...

which one would you prefer???</TD></TR></TABLE>

you cant really dyno intakes correctly the hood open and the fan running if u have an ebay shortram and place it higher in the air it will produce hp.

dyno'in an intake isn't accruate when the hoods down and with engine heat ur hp will go down. the stock air box act like a heatshield around the intake which is why some people perfer this setup and the comptech icebox. the realtime racing integra ran an airbox the nsx one which is the same as the legend but its hard to rig it in there. theres other that like other setups like j's racing and build there own custom heatshields and stuff. mostly personal preferance do wutever u wanna do

 

My friend uses an NSX air box on his Civic HB B18C race car.
I use a 99-00 Civic Si Air Box with the extension piece to bring in the cooler air.

I now prefer the look of the stock air boxes. I would not recommend using all that recirculating box and tube junk....just the air box, main tube and (possibly) the lower cold air extension which may need modification.

 

Well i have to say that easier breathing for the car is more power....but i still use the stock box becuase i like it....its under cover and it probably works as well as a "open intake"....

 

Tell me more about this NSX airbox.

I need info also on how to make it work with an EF. Thanks.

Ill do some research when I get off work as well.

 

I found a picture of a NSX airbox here - https://honda-tech.com/zerothread?id=505532

Its really large and from this thread the people said I would have to relocate the battery. How could I modify a stock airbox to pull more air in without the look of an aftermarket intake?

 

i have an aem cold air with a k&n filter and a eg airbox connected to a aem short ram with a K&n drop in filter..the airbox feels way better then the aem cold air..its alot more responsive from a start or slow speeds..the aem cold air seems to bog a bit down low

 

Grip- Do you have any pictures?

I was thinking of making my own intake pipe then adding a drop in filter with the airbox over it.

Should I just use my airbox or is there a more efficent one off another honda?

 

just get a J's, they ARE the best

 

jus run the filter on the throttle body..hehe. but nah seriously, i seen a all motor teg with the filter on the tb...does anyone kno if thats a good idea and if it produces power?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSRswapandslow. &raquo;</TD></TR><TR><TD CLASS="quote">just get a J's, they ARE the best</TD></TR></TABLE>

pls explain..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bOOsTiNSoHcVtEc &raquo;</TD></TR><TR><TD CLASS="quote">jus run the filter on the throttle body..hehe. but nah seriously, i seen a all motor teg with the filter on the tb...does anyone kno if thats a good idea and if it produces power?</TD></TR></TABLE>

Would not gain as much power as a well designed longer intake. Because its so close to the throttle plate, it doesnt have enough time to build up the right velocity for long harmonic powerbands, which is pretty much the only benefit of longer intakes, the velocity harmonics, which yeilds nice power...like the AEM hump, thats just a really strong harmonic.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EVOL &raquo;</TD></TR><TR><TD CLASS="quote">

pls explain..</TD></TR></TABLE>

The J's is designed for good throttle response for the road racers out there from the large plenum design. Nothing like ITB's, but way better than OE boxes and cold air's. The intake also produces a nice powerband between 6-8k rpms, which is where a large amoutn of your peak power takes place, which is why it is so good on the dyno becaues you dont need the 'moving air' like on the road to produce the wave harmonics.

I think when it comes to the intake system, the best combo next to ITB's is probably the J's Racing intake with the Endyn AIR manifold...not only would it perform extremely well, it would also look really sweet also.

 

pics

this is the aem cold air..you can see where it had to be cut so i could use the short section to fit right inside my stock eg airbox..just leave a rubber coupler on the end of the shortram when you stick it into the eg airbox so it forms a seal then use a regular hose clamp on the outside of the airbox over the rubber..works great and looks so diffrent..ill try to gte some pics of the airbox installed later

 

Who carries J's racing intakes?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by libila &raquo;</TD></TR><TR><TD CLASS="quote">Who carries J's racing intakes? </TD></TR></TABLE>
jhpusa.com
aj-racing.com
and some times you can get them used on honda-tech.com
also try the topfuel type 1 intake or the t1-r intake they are all the same just diffrent brand names..all of them are great and about 300+ bucks

 

I cant find a box style intake for an EF. I could probably just make my own...

 

http://www.dragracing.com
just go there and get a knock off J's intake...they are like $70 shipped???

it'll be better than some "box" style intake.

 

does anybody know where else to get a fake J's the dragracing .com is on backorder for a couple more weeks and they are thinking about jacking the price up to $80.

 

look at that...there's a CAI thing on it too

 

that's also a mugen piece of **** that cost like $500+

and it's a compeltely different design than the j's, that's been proven to be better

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSRswapandslow. &raquo;</TD></TR><TR><TD CLASS="quote">that's also a mugen piece of **** that cost like $500+

and it's a compeltely different design than the j's, that's been proven to be better</TD></TR></TABLE>

LOL that's the pic they had for the J's intake

check it out:

http://www.jhpusa.com/catalog/...d=148

 

damn, i'm pretty sure thats the Mugen one...

but damn, i see it too....weird

i still say get the Top Fuel/Js/whales ***** style....it makes power, gaurenteed