I have an OBD-1 JDM H22a. My mechanic installed the swap in my Integra about 8 month ago. No codes, no real problems, other then only getting 100 miles from the first half of a tank of gas and 200 miles from the second half. Then toward the end of the tank, it feels like I have less power. Also, I have an 11 gallon tank. WTF is going on, A/F gauge reads no different either? And other then these minor things, it runs really well and I have put about 10,000 miles on it already. If you could take a look at these vacuum lines and tell me if they are hooked up right, it seems like I am missing something and looks kinda funny compared to my buddy Dan's OBD-1 USDM H22A. I am running the EGR too. Here are the pics...



The vacuume source in the back of the IM is going to the big charcoal canister mounted to the firewall. The other one in the back it obviously capped off, where is it susposed to go? Is it neccesary for something that I don't have it hooked up to, or not? Then the vacuum source on the throttle body is obviously going to the MAP sensor. Is all this right?



There are abviously two vacuume sources in this picture. The top one is going to my EGR, which in mounted toward the front of the vehicle. But with the source that's capped off with the yellow cap, where is it susposed to go? Something having to do with the butterflies, but I am not sure? Is it neccesary for something that I don't have it hooked up to, or not?



OK, there are two vacume sources in this picture that matter, the vacuume line runs from the stock FPR to the JDM resonator solenoid (black) and then back to the manifold, right next to the throttle cable bracket I made.

So, here are my questions... Do I have any vacuum location/use problems? How about unnessary or restricting vacuum uses? What are the two capped off vacuum locations used for? All other educated comment would be greatly appreciated.

Thanks in Advance!




Modified by slim9300 at 12:59 AM 4/19/2004

 

i know for one is that your vacum supply for your fuel pressure regulator should be going from your manifold directly to the regulator.

also one of the vacum ports that you have blocked off on the right of the intake should be going to the egr vacum control solenoid and egr control solenoid. it should be vacum hose 24. if that is going to the right place then the other should be going to your IAB control valve for the secondary intake runners.

 

i believe that one capped off by the secondarys is for the cruise control. the one on the back of the manifold i think goes to the iabs. once my del sol comes back from the shop ill be able to confirm it.

 

i dunno what that jdm resonator thingy your talking about is but id take it out, also take the line off the top of the fpr and plug it and leave the top of the fpr open , def runs better

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">if that is going to the right place then the other should be going to your IAB control valve for the secondary intake runners.</TD></TR></TABLE>

What does the IAB control valve look like? A picture would be GREATLY appreciated.

Thanks alot guys! This thread should very be helpful for all H22 swappers!

 

also JDM motors don't have a starting air valve or something like that, as apposed the usdm's- which might account for the difference in look.

again sorry for sizing of the pic, but look at all of your lines and see for yourself. Good luck

 

Holy **** dude, you saved my vehicles runability! The test run was soooo smooth. The cruise control valve was feeding the EGR unit and the EGR valve was capped. Then, the Intake Soleniod Valve was feeding the EVAP canister and the EVAP valve was capped. I then bypassed the JDM purge valve located on the fuel rail and ran the vacume line directly to the manifold.

Thanks a TON!

Now I am going to go take a look at the IAB Control Solenoid, not sure how it's hooked up. I thnk everything is good, but with the diagram you provided, I can at least check.


Modified by slim9300 at 5:16 AM 4/19/2004

 

(The yellow cap closest to the throttle body)-I don't think it matters, but the other side should be capped off(switch them)....that's how mine is. The capped off side goes to open the valve on the resonator which you don't need with your CAI.....


The cap on the end of the plenum near the IAB is for cruise control, which you may not have either....

 

Is there any reason that now with all these vacuum problems fixed (mentioned two posts above), I am running slightly richer on my Autometer NB gauge? Like one bar to be exact. I know that NB doesn't really mean anything specific, but the increased richness is clearly visible to anyone following behind when vtec engages. And I am well aware that H22's naturally run rich but I just want to know how vacuum lines could change the Air/Fuel mixture?

Thanks again

 

not tryin to crap the thread but on the secondary butterflies when engine off are the butterflies closed or open?

 

closed. I think.

 

i guess i really need to hook up the IAB controls and see what happens then