The pics looked alright on Dave's computer when we uploaded them, but
they need a little bright/contrast tweaking on my end. Your mileage
may vary. I'd also like to apologise for Crazy Dave's goofy looking
***, he's a Ford lover. You have to be a little patient with those
guys.

The ITBs seat down into the billet block manifold. and seal with
o-rings. The transition from the air horns to the ITBs to the
manifold to the head ports is perfectly smooth with no misalignments
and no turbulence due to shoddy construction that you see on almost
all other DIY ITBs. The common tech misinformation is that ITBs from
motorcycles are "held on by rubber hose" which while correct, isn't.
The insides of the rubber coupling hoses used on motorcycles are
stepped so that the ID of the couple perfectly matches the runner ID.

The air horns are, obviously, a slip fit and will be retained with
band fasteners once desired overall length is determined. The inner
horn that seats into the ITBs has it's entry enradiused to smooth the
transition from the outer horn to inner. The material used was
extruded aluminum tube, and try as he might Dave's dad couldn't get
more of a bell on the outer horns. Better results would have been
acheived with a more expensive form of aluminum tubing... $125 worth
of expense to be exact. We figure that we can drape form some lexan
to form a bigger radius entry, which the outer horns will fit through
and seal against and will form an airbox which is fed through an
Impreza hoodscoop being installed into the Civic hood. Functional rice!

Engine management will be gratis of Dave Blundell of PGMFI.org (not
Crazy Dave), who is tweaking the latest NG5 developmental ROM for the
OBD0 Civics to support alpha-n MAP/TPS blending. A more hardcore
************ on the planet there isn't.

The only two things I don't like are the way the manifold is going to be
prone to heatsink (no worse than most setups, truthfully) and I'd have
liked the throttle blades another 1" away from the head for
ease of tuning.

 

damn not bad how much did it cost to get that flange c&c'd? that **** is d00kie.

 

It's a $1000 ZC build, inclusive of building the engine to 11.5:1 CR, the ITBs, engine management, and the NAAAWWZ we'll spray on it at the track. We have a bit of stuff laying around to ease the budget, meaning the ITBs were free (they were given to me, I gave them to Dave), Dave's father is an ME and owns his own mill/lathe and made the manifold/air horns for cost of parts, and I'm pgmfi.org's #1 stunna and prodigal son so the EMS is free.

I don't think we plan on making any of these setups for sale, just wanted to show off a pretty cool one-off project.

 

Nice ITBs are in my future

 

you are the supa stunna

 

i'll have to go read NG5 thread all over again. that is genius. tunable horns!! why did i not think of that?!
stan

 

i sank to a new low, relpying to my own post.
what is the OD of the inner tubes?
stan

 

I'll be in Asheville next week. I have to check these out.

 

sexy....althought now i wont be the only idiot that currently (to my knowledge) has an ITB'd zc. i LOVE ITB's.....

 

i want to put itb's on my sohc zc! good job

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kendall &raquo;</TD></TR><TR><TD CLASS="quote">I'll be in Asheville next week. I have to check these out.</TD></TR></TABLE>

I'm supposed to have a go at tuning Tony @ CIA's ITBs as soon as I get off my ***. I don't know why his car runs so well off of a stock P30, I think it's due to how close the throttle plates on his are to the head, we'll see. He'll probably also be my OBD1 ITB code guinnea pig.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redzcstandardhatch &raquo;</TD></TR><TR><TD CLASS="quote">sexy....althought now i wont be the only idiot that currently (to my knowledge) has an ITB'd zc. i LOVE ITB's.....</TD></TR></TABLE>

evilxkid has an ITB'd ZC. Bright guy, you might want to look him up, swap some lies. Tell him he better not still be biting off my no hood no marker light style.

BTW, the only time idiot should be used in the same sentence with ZC is when you are describing ZC haters. That and the D16A6 are the two D-series with the most potential. ZC head is set up kinda wierd to port, doesn't turn out near as well as the A6 (or a Z6 with enough money dropped on it), but for a streetcar it's perfect and has superior flow out of the box. ZC + boost is one of my favorite low buck combos.

Stan D, I dunno the OD of the inner tubes, they are all a little different, within a thousandth or so. The outer and intter tubes are matched sets; A, B, C, and D. If you look in the picture above, I think you can see where one of the tubes was written on with a marker; the other letters are out of sight from camera angle. The ID is the same as the ITBs throat, 42mm (tapers to 40mm throttle plates).

 

thanks, i hoped when you said the parts were made on a lathe you didn't mean MADE on a lathe...
i guess off to my fabricator i go
another question, how far away is the "user" implementation of custom scalars in NG5?
jason's editor does not seem to have that enabled yet.
would you or blundar share the OBD0 bin for this? i can definately be a testing monkey for the code as much as i can.
stan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis &raquo;</TD></TR><TR><TD CLASS="quote">
evilxkid has an ITB'd ZC. Bright guy, you might want to look him up, swap some lies. Tell him he better not still be biting off my no hood no marker light style.
</TD></TR></TABLE>

actualy i'v been rocken the socks off my fully built ls/vtec itb'd motor for a while now. o'h and j.d your no match for my no hood/side marker style... sorry man, my anti bling is just to strong for you.


ps: do you think you could make one of those billet intake flanges for a k series motor!?!

 

Umm. Do the BackStreet boys know that guys missing?

BTW very nice looking set-up.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stan D &raquo;</TD></TR><TR><TD CLASS="quote">another question, how far away is the "user" implementation of custom scalars in NG5?
jason's editor does not seem to have that enabled yet.
would you or blundar share the OBD0 bin for this? i can definately be a testing monkey for the code as much as i can.
stan</TD></TR></TABLE>

I own an OBD0 car and I do 95% OBD1 code testing. Translation: **** if I know and **** if I know why not. I suck.

Jason's editor does not support a number of things, and will continue not to, for the duration until the codebase has settled down to something stable. As Blundy pointed out, asshat's like little Blake W and johnnycui have a knack for both assembler programming of MCUs and for creating GUIs in higher level languages, and can seamlessly incorporate sweeping changes into a "small" version revision. Beta datalogging in Uberdata 1.66 versus 1.65 versus Jason being fucked with 8 maps and constantly changing lookup routines and not being able to support it fast enough for most people's liking is a good indication of this... BTW, working datalogging in Uberdata will most likely be version 1.666 at my request. I'm a sinner and I'm proud.

**** the specific OBD0 tuned ROM I'll come up with for this Civic; the perfected OBD0 ITB codebase will be open source, free to everyone, and be supported by TE and other editors.

 

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

actualy i'v been rocken the socks off my fully built ls/vtec itb'd motor for a while now. o'h and j.d your no match for my no hood/side marker style... sorry man, my anti bling is just to strong for you.
</TD></TR></TABLE>

So my dents, dirt, rust, and shitty wheels avail me nothing? Oh ye of little faith... behold the oil residue from leaky turbo/**** ring lands:



"will race for food" (courtesy HT's own Turbo Sam)

"show cars suck" (courtesy HT's own GSRswapandslow)

And my fav:



"my *** is fast and dirty" (courtesy my roomate)


BLing ITBs are cool and all, but nothing beats hijacking your own thread

 

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

nothing beats hijacking your own thread

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

lol...

 

LOL! i don't know if that was a elegant insult to Jason or to the OBD0 community
well put, well seeing as i am useless in computers aside pr0n and audio recording i'll remain in waiting for the hand outs and help
my ITBs are almost done and then i can commence blowing up my built A6.
share away!

 

That was not an insult to Jason or the OBD0 community; it's a simple fact. Nothing but respect for Jason, he gets dumped with a **** ton of work from a half dozen happy little asm coders who want him to rewrite TE to support their test .bins to make it easy to tweak so they can figure out how to go back and change it all around so Jason has even more work. Nothing against the coders, either, it's just a very complex situation and a lot of responsibility to take on as a "hobby" for "the fun of it." Seriously, bro, if you like TE you should Paypal Jason $5 and PGMFI $5... pennies, but if 8% of the people who used these programs did a token, it would show.

 

i was joking JD,
nothing but respect to anyone who bothers to do this and retain the decency to share the knowledge.
paypal's away. waiting for the RTP board status to get that paypal'ed as well
stan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis &raquo;</TD></TR><TR><TD CLASS="quote">I'm supposed to have a go at tuning Tony @ CIA's ITBs as soon as I get off my ***. I don't know why his car runs so well off of a stock P30, I think it's due to how close the throttle plates on his are to the head, we'll see. He'll probably also be my OBD1 ITB code guinnea pig.</TD></TR></TABLE>

His car runs so well because I'm the one who made him put the ITB's on his car. Hell it isn't even his setup, it's mine (until he pays me for it). In fact my header is going on his car on Monday. I just got my CBR 954RR setup in the mail today, so we'll be experimenting with it next week as well. Let me know how the tuning goes.

 

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

His car runs so well because I'm the one who made him put the ITB's on his car. Hell it isn't even his setup, it's mine (until he pays me for it). In fact my header is going on his car on Monday. </TD></TR></TABLE>

Alright, that rings a bell. He mentioned some guy who keeps throwing cool **** at him to try out on the car.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">I just got my CBR 954RR setup in the mail today, so we'll be experimenting with it next week as well. Let me know how the tuning goes</TD></TR></TABLE>

I'm not expecting much, to tell you the truth. I can clean up some higher rpm WOT fuel maps, and maybe lean the cruise area and smooth the idle out a bit, but transitory AFR and part throttle AFR are all to hell due to the nature of ITBs on a stock Honda speed density system. I'll have to take some datalogs and have a look-see.

Neetronix wants $160 for a non-linear MAP sensor that stretches the near-atmospheric pressure readings out so that you get better resolution in that area, and I'm not sure I want to spend that much for something that might not do the job very well... MAP doesn't indicate load very accurately with ITBs. I have OBD1 alpha-n code in the works via Evan (whom I'm sending my other set of 954RR ITBs), which I dunno if he will want to release publicly... but I can tune a couple cars for locals with it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis &raquo;</TD></TR><TR><TD CLASS="quote">I'm not expecting much, to tell you the truth. I can clean up some higher rpm WOT fuel maps, and maybe lean the cruise area and smooth the idle out a bit, but transitory AFR and part throttle AFR are all to hell due to the nature of ITBs on a stock Honda speed density system. I'll have to take some datalogs and have a look-see.</TD></TR></TABLE>

Honestly, if we only get the WOT maps dialed in properly I'll be surprised. I'm not expecting to get anything done as far as part throttle tuning.

Have you considered building an extension to move the throttle bodies back another inch or two? Part of the beauty of ITB's is the increased level of fuel atomization and your injector location won't give you any significant improvement over stock as far as that is concerned. Also, are you running the stock 954RR injectors?

 

I'm not too worried about atomization in this engine as it has significantly more quench than stock. But, true, injectors closer to the head lend to idle emissions and not fuel atomisation. Most of the gains with EFI in atomisation are due to modern injector designs. Not perfect yet, but... the pencil injectors are getting there.

I truly don't know anything about the 954RR injectors, I haven't found any specs on them. I'm not worried as I can grab a pencil unit off of any K-series Honda; to the best of my knowledge those are 350cc at the smallest.

Looks like OBD1 ITB code will be coming sooner than I thought, and from an unexpected direction. Time to test some code on your/Tony's setup.

 

nice setup, i'm trying to finish my ITBs for my d16z6, which ecu software are u using? crome? uberdata? i'd kill to get a hold of a bin file for these ITBs.