removing black box

[89sei89dx]

i have been tuning my car little by little. when i still had the vac lines i also had no cruz or lines or mounts. same with ac and power steering all mounts gone and hoses tubes condensors.resister in int air temp sensor c.a.i. no cat 2.25 to 2.5 in exhhaust to hi flow muffler. lightweight hatchremoved weight under hood and motors for old flip lights and new lights are like a pound or 2.light plastic no trim inside in back no interior behind back seats. tiny bumpers basicaly mounts for covers. and when i removed vacuumlines i got a lil better acceleration and a good bit more of everything over 4000. can i put the intake manifold and fuel rail throttle body off of my 91 integra with b18a1 on my a20a3 and does anyone know if that thhrottl body is larger or better than ours

[Rendon LX-i]

i have been tuning my car little by little. when i still had the vac lines i also had no cruz or lines or mounts. same with ac and power steering all mounts gone and hoses tubes condensors.resister in int air temp sensor c.a.i. no cat 2.25 to 2.5 in exhhaust to hi flow muffler. lightweight hatchremoved weight under hood and motors for old flip lights and new lights are like a pound or 2.light plastic no trim inside in back no interior behind back seats. tiny bumpers basicaly mounts for covers. and when i removed vacuumlines i got a lil better acceleration and a good bit more of everything over 4000. can i put the intake manifold and fuel rail throttle body off of my 91 integra with b18a1 on my a20a3 and does anyone know if that thhrottl body is larger or better than ours

Only a b16 intake manifold work just got to drill two holes and block your egr off its pretty easy...then u can have what ever injectors rails and thottler bodys you want man...i was going to do but never got to it. but that write up would be great.

Rendonlxi

[Rendon LX-i]

just wanted to show you bobafett setup i saw it person looks NOICE lol


b16mani

[89sei89dx]

i want a b16 manifold is it alot better airflowthan ours .and how big a t.b.can be on it. also my friend just got a mazda protege and its stock .its pretty zippy considerin. i asked me to help hhim make it a lil faster so wepopped the hood to lookat what we had to work with. and when i saw his stock intake mnanifold i liked it. i thought i would put a couple of pics of it on here and see what u guys think. ITS STOCK likethis. dou think it would be good to design a manifoldlike this for the a20and

[cygnus x-1]

I've seen ^those^ intakes before. Interesting design; much like an exhaust header. Long runners for good low and mid-range torque. Would be really cool to see what it would do to an A20, but it would be a pain to build.

To answer your other question, yes you can fit a B18A1 intake manifold to an A20 head. I have one on my 2g Prelude. It does need some modification though. You need to drill 1 hole and enlarge two others. The EGR port needs to be cut off. The throttle linkage and fuel lines may need some modification. Some of the sensors and stuff may need to be rewired but I can't say exactly what would be needed with a stock Accord. My setup is kinda mix and match and I'm using an aftermarket ECU (Megasquirt) so it's one of a kind. I also didn't have enough hood clearance but the Prelude has a lower hood than the Accord so I think it's ok there.

Not the greatest picture but here it is:




C|

[rfiks]

()ok back on topic... those diagrams are insane, what did u do with the vac hoses do u have any instructions or advice? have u seen any "noticeable" power gains from removing the black box? thanx in advance!

[Rendon LX-i]

Did not know u can mount a b18 manifold on a20 but yeah, i think he working on that so it wont b hard for us to do "rfiks"

Rendonlxi

[mushroom_toy]

Im interested in a write up too....I was going to do this but I didnt feel like doing all the work...XD Glad you did though as it needed to be done. Now all we need is a good writeup for it.

[89sei89dx]

ok....im gonna try but im not good at explaining things and i did not take pics when i did it (SORRY IM RETARDED) so now im goin thru my own pics and the vac line drawings i made for u.this is takin a while
.... i didnt have ac or ps or cruz so i got rid of those
. there is 1 vac line from cruz to intake manifold on drivers side. . i plugged that
..... since i didnt have ac . i thought i dont need (ac idlle boost valve). so i opened up the black box and removed ac idle boost valve that had (# 19) goin in, and one goin out of it to the check valve that has vac connection to (ignition controll solenoid valve) and another vac (#12) comin into it. number (19) goes out and connects to metal lines and then to the (ac idle boost valve) that is on the front drivers side top of intake manifold (on my 87) .
.. on the (ac idle boost valve) on manifolld it had a vac line (19)connected to it and another vac line lower comin out that went to the lil black box that connects onto the drivers side of the stock air fillter box (some sort of sensor i acuallly had removed a long time ago) and that box had a vac line connected to it that went to the idle controll solenoid valve, that sits on the drivers side of the engine bay above the tire.. and another vac line goin from that (the i c s v) that went to the intake . i plugged/removed all those.
...so now removed ac idle boost valve off of manifold and it screwed off so i screwed in a plug thhere.
...(fast idle controll solenoid valve)... it is the (#23) vac line that pllugs onto driveres side end of intake manifold. it goes from there intometal vac lines then into black box and into the (fast idle valve) . it has another vac line(#18) that goes from it out of the black box and that plugs into stock intake box. .gone..
...(dashpot diaphragm).its the thing that sits on front of the manifold right by the throttle cable near throttle body on the front . i removed the vac line(#6) that goes from that to the dashpot check valve then into metal vac lines. it comes out near front of throttlle body and plugs right into the top of t.b. then i removed diaphragm from intake. ..
...(E.G.R.). i removed becouse i was always gettin a code 12 on check engine light. valve has (#16) comin off it and into black box. where it goes into a air chamber thing (that also has vac line goin from it to constant vacuum control valve)then from that into egr controlll solonoid valve. (#17) vacline comes off of egr solonoid valve, and out of black box where it connects to stock intake tubing..so all that is gone and the lines from the air chamber thing were plugged but then i removed air chamber thing becouse it was plugged to the egr stuff (now gone)and to the (cvcv).
....(constant vac control solenoid valve) (cvc valve ) has vac line #24 comin off it . i didnt know if it was hurtin my performance to take it off becouse i got a wierd sputter the first day when i took this off so i put it back on and just re routed it off the bottom of the drivers side of intake and into car..
...

so now i think after all this i have just the map(vac #21) and ig control solonoid valve(#12 and #15 vacs) comin from black box. so i remove box itself and metal brackits and i put those 2 in a smalller whit box till i figure out where im gonna mount it

.... wait. (#3) vac line comes off of charcoal canister. and goes to metal vac lines where u see the most stock vac lines goin to black box. it goes to there and then it does a tiny u turn and goes over into a sensor below the distributor or thermostat and that was never plugged in on mine since i got it ,it was capped so ..
.....(map Sensor) it has (#21) vac line goin out of it from blackbox to the metal vaac lines. then from there it comes out of metal lines near bottom of t.b. and it comes up a couple inches then plugs into the top of the throttle body.i unplugged it from there and ran a vac line streight from map to there.
....(ignition control solonoid valve). it has (#15 aand #12 vac lines)comin out the black box..(#15) goes out of black box and to metal vaclines. from ther it goes aa couple inches and then comes out of metall vac lines and to the back vac line of the distributor. and (#12) goes from icsv out of black box to metal vac lines and from there it goes to a t and thhen to anothere t then it goes around the egr and aroundthen comesout and plugs into the front of intake manifold on top in the middle. the first tin the metal vaac lines goes out then plugs into the sensor or whatever is by the thermostat with the two vac lines . other is (#3) .the second t goes out and it has a short vac line that plugs onto the front vac input on the distributor. i removed alll the metal vac lines then cleaned up and hid the vac lines(#12 and #15). and thats when i took the pics u see in this post. soooooo.i am gonna try to do a how to with pictures accept i did all thhat without takin pics and my othercaris aan 89 with the different intake manifold. so it will be hardto do but im gonna try.i hopethis hels some of you. and if u have any questions ask and i will try to help. the car is runnin real good and its faster then before i did all this. gas mpg seemed to be about the same 25 to 30. accept 1 day right after it looked like i got about 22 mpg . but i think i screwed up adding it up cause since thhen its been good about the same as before i think. illl let uall know if i have any problems later. alaso i dont want to be responsible for if it dont work out the same on your cars so be careful and pay attention to how ur car runs. ive had no probs but that is just me.it does studder a lil sometimes below 2000 rpms and i havnt figured that out yet. if yall have any ideas what may hhave caused that let me know. i dealtwith it becouse of the other improvements acceleration and top end.
.. so this just took me about three hours to write up for u. if u got questions or see something i may have skipped or something let me know and ill try to help. also i triedto find info onhhhow to do this for a long ass time and searched till i died. and then came back to life. then i was on prelude power searchin for it and saw pics and posts talkin bout it. and one guy who haaad removed most of it said in a post . the si's only need this and that . so i took that info and started tryin to figure it out on my own.so here we are. mine still runs good good mpg and a lil more power

[89sei89dx]

i tried to pu this in the how to section and it told me i dont haave access or i dont have permision..am i doin somthin wrong

[A20A1]

I can move or copy the important info in this thread then post it in the how-to section for you.


That header like manifold looks neat. I like that the runners are facing and are equidistant from the TB and it's equal length.

[89sei89dx]

. that would be good. if someone wants to try this and take pics while they do it and then put a step by step with pics in the how to it would be awesome. i think some would find it easier with pics. ill try to answer any questions i can to help but i forgot to take pics of it.