06/15/2005:

Subject Vehicle: 92 H23A1 Automatic Bone Stock

It's probably been done before but I thought why not, because when I searched I couldn't find any DIY for the 4th gen prelude or pictures. I did find that for a 5th gen however. :-)

Tools Required:
Phillips ScrewDriver + & -
10mm Socket, Ratchet / Wrench
Vacuum Hose (Mine was included)
Something small to plug up 1 small vacuum line.
Scissor
Hammer
CAI (Mine was from ebay $40 shipped)

Removal of factory intake:
Have your tools ready, will be safer if engine bay is not warm. Remove the vacuum hoses that are connected to the stock intake off it, there should be about 2 on the part closest to the i/m, and 1 near the air filter box, I cant remember exactly. Just make sure that all the vacuum lines that are routed next to the intake and are unconnected to the body of the intake (pipe). Clip off the top section of the filter box and disconnect it from the main plastic intake pipe. The air filter will come off with it. Take a nice look at it and kiss its power-robbing properties goodbye! There are 2 bolts connected to the bottom part of the filter box, proceed to remove them. That will allow you to lift the bottom part of the air filter box off, you can toss that aside as well. Next proceed to use a screwdriver and loosen the screw tightening the clamp on the intake connecting it from the intake manifold. Once that is loosened, you will be able to remove the intake pipe, proceed to do that now.

Installing New Intake:
Compare the new blingidy bling pipe with the older one and laugh! Next we will connect a rubber connecter to the cai pipe with 2 bends and connect it to the intake manifold using the included new clamps. Tighten it down a little bit, not too much because you may need to move it about in a little bit to finalize placement. Loosen the lug nuts and jack up the car (drivers side front guys, pay attention! :D ) Once jacked up fully remove the wheel and place it on the side (I used it to sit on). You will now be removing the frontal part of the fender liner to gain access to the area behind the front bumper. The fender liner will require a + Phillips Head screwdriver. You will also need to remove the other plastic splash guards underneath that area. Those are held in place by a few (3-5) 10mm bolts. Now that you have gained access to the area where the filter will be installed.. proceed to widen the factory hole with the hammer you snatched out of your dads toolbag. Don't hammer it to death though, you dont have to widen it much at all. What I did next and reccomend to all is cut up a vacuum hose length wise (credit to person who posted this about a year ago I believe) and put it around the edges of the hole to keep it from scratching the new pipe, not to mention it looks hot too! Use your favorite color! My Prelude was completely stock and never dismanteled so if you fit into the same category.. you will need to remove some extra plastic boxes and 3-pipe router off from that area, otherwise the filter will not fit! Once you have those two plastic pieces off, connect the two halves of the new cai pipe togethor and clamp them togethor using the rubber connecter provided by the nice ebay company you bought the intake from. Connect the filter to the pipe and tighten the clamp. Check fitments of all pipes and the filter and finalize the position, and tighten all clamps securely. Put the fender liner and plastic splash guards back togethor the way they originally were. Put wheel back on, tighten nuts, lower vehicle, and re-tighten all the lug nuts. Turn on the car and see how it idles (Mine was perfect), you should plug in the smaller vacuum line near the intake manifold. As for the other larger vacuum line, you can either add a breather filter on it (the valve cover), or you can get a hose and connect it to the intake you got. I didn't connect mine yet because I will be buying a breather filter tomorrow.

Enjoy the new intake! Rev up the car to hear the exciting new sound! But when you really hear it is when you are driving down the road, on partial throttle and wot.

Before:


After:


Conclusion:
Pro's:
The butt dyno definately feels a difference. Low end response is numbed a little bit but overall it's just amazing and sounds awesome! For the price you can't beat it.
Con's:
Requires at least 45 minutes to do properly, if you live in flood-friendly areas.. get a bypass valve. I personally don't require one in NEW YORK! :D

Installation Time:
25 To 60 Minutes

Cost:
$40 Shipped

Source:
Ebaymotors.com

See also:
DIY: 4TH Gen Prelude H23A1 Power Steering Belt Install
https://honda-tech.com/zerothread?id=1332351


Modified by prelude964 at 4:43 PM 8/7/2005

 

http://img13.echo.cx/img13/4508/016tg.jpg
http://img13.echo.cx/img13/633/024by.jpg
http://img13.echo.cx/img13/1183/034zy.jpg
http://img13.echo.cx/img13/943/045uj.jpg
http://img13.echo.cx/img13/1617/052dt.jpg
http://img13.echo.cx/img13/3784/065ni.jpg
http://img13.echo.cx/img13/3935/075mw.jpg
http://img13.echo.cx/img13/4307/082wd.jpg
http://img13.echo.cx/img13/1913/096fk.jpg
http://img13.echo.cx/img13/6600/108xn.jpg
http://img13.echo.cx/img13/8527/111ac.jpg
http://img13.echo.cx/img13/340/126zc.jpg
http://img13.echo.cx/img13/1043/134oo.jpg
http://img13.echo.cx/img13/4580/144om.jpg
http://img13.echo.cx/img13/4296/153jc.jpg
http://img13.echo.cx/img13/4088/165zz.jpg
http://img13.echo.cx/img13/7946/176bk.jpg
http://img13.echo.cx/img13/107/182rd.jpg
http://img13.echo.cx/img13/89/196jx.jpg
http://img13.echo.cx/img13/7912/204zc.jpg
http://img13.echo.cx/img13/7035/219oo.jpg

 

fixed it for you

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelude964 &raquo;</TD></TR><TR><TD CLASS="quote">
Con's:
Requires at least 45 minutes to do properly...

Installation Time:
25 To 60 Minutes
</TD></TR></TABLE>

Speechless...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sam1am26 &raquo;</TD></TR><TR><TD CLASS="quote">

Speechless...</TD></TR></TABLE>

LOL

Good Write-Up I guess, its not really that difficult. Remove old, put on new

 

Hey, did you notice a difference in gas mileage on the freeway? I'm curious. Nice write-up, BTW.

Dan

 

watch out for puddles

 

excellent write up!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sam1am26 &raquo;</TD></TR><TR><TD CLASS="quote">

Speechless...</TD></TR></TABLE>

Well, what I meant was 45 minutes to do properly if it's your first time doing it.
But now that I have installed one.. I can knock it out in 25 minutes

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dougs96SI &raquo;</TD></TR><TR><TD CLASS="quote">

LOL

Good Write-Up I guess, its not really that difficult. Remove old, put on new</TD></TR></TABLE>

Yeah, but when I performed a search no one had a diy so I figured why not put that darn camera to use!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudemanDan &raquo;</TD></TR><TR><TD CLASS="quote">Hey, did you notice a difference in gas mileage on the freeway? I'm curious. Nice write-up, BTW.

Dan</TD></TR></TABLE>

Not yet, only been one day, It definately has not decreased, should increase but not by much.. I will know in another day or two.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rival12 &raquo;</TD></TR><TR><TD CLASS="quote">watch out for puddles </TD></TR></TABLE>

Yeah, horrible pot-holes here in ny.

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

Thanks! I love all you guys , There will be more DIY's from me as stuff starts rolling in. Next will probably be a h22a vtec head swap onto the h23a block. I'm looking for the head and all the parts required currently. Then I'll hit the dyno b/c no one has dyno'd one of those frankenstein h23/h22 motors.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelude964 &raquo;</TD></TR><TR><TD CLASS="quote">
Next will probably be a h22a vtec head swap onto the h23a block. I'm looking for the head and all the parts required currently. Then I'll hit the dyno b/c no one has dyno'd one of those frankenstein h23/h22 motors. </TD></TR></TABLE>

I've seen at least three that I can remember...

 

nice write up!

 

Only one I've ever seen is the "Turbo Templo" Chris Templo's Prelude which was in HondaTuning a while back... I searched the threads here and found the Frankenstein H22/H23 thread but no real baseline dyno's.. I want to see how much of an improvement there is and how much tq it produces.

 

I am in the process of installing my cold air intake and have ran into a slight problem.

I have everything out except the "resinator" I believe it is call...I undid the 2 bolts that I thought were holding it in there...But I cant pull it out of there. There seems to be like a throttle cable on this box peice.

Can anyone help me with this so I can get my CAI installed?

Thanks!

 

Nevermind...I got it...

 

Did you really use that filter with the wire mesh in the front? They sent me one and I sent them an angry email and requested a good one. Needless to say, I got a filter that actually filters the air it pulls in

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by InvaderTrax &raquo;</TD></TR><TR><TD CLASS="quote">Did you really use that filter with the wire mesh in the front? They sent me one and I sent them an angry email and requested a good one. Needless to say, I got a filter that actually filters the air it pulls in</TD></TR></TABLE>

I agree, that filter is absolute ****. You should see the ****** monster-sized K&N filter on the end on my intake Its a conical filter, 9 inches tall with a 6 inch diameter base that tapers down to 4 inches at the top. Overkill? I think not

EDIT: Good write-up by the way

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97Preludeguy &raquo;</TD></TR><TR><TD CLASS="quote">

I agree, that filter is absolute ****. You should see the ****** monster-sized K&N filter on the end on my intake Its a conical filter, 9 inches tall with a 6 inch diameter base that tapers down to 4 inches at the top. Overkill? I think not

EDIT: Good write-up by the way </TD></TR></TABLE>

Great write-up and use the largest filter you can fit in there!

I'm personally running this filter with my short ram.
http://www.knfilters.com/searc...990-1

 

sorry to bring this back but there are like no tutorials on the 4th gen cold air intake installation. i have it in the lude and it runs well and sounds better but i have my butterfly valve vacuum line open to regular air and there is another line that is open near the intake manifold. the cold air intake i bought only has one nipple for a hose and i used the hose that it came with to connect the breather tube from the valve cover to the cold air intake...so what do i do now or what did i do wrong? please help. theres not CEL but i know its fucked up in some way even if its not a big deal.

 

this is actuall for a 4th gen and how to install it. the intake line goes to your throttle body ports. I cant remember exactly which one