Hi new here to the site. I'm considerng doing a H23 swap on my 92 LX auto. I found a good engine with tranny. What ecu and tcm do I need to do this swap? how noticeable is the power increase compared to my stock?
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H23 are ok u want power get a h22Originally posted by Blue_azure
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Wow... that was SOOO much help.Originally posted by 91f22jonH23 are ok u want power get a h22
You'll want the ECU and TCU from the Prelude Si, the one with the H23.
It's a 160hp engine, with more torque. Yes, it's a noticeable increase from 125hp. No, it's not a rocket.
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You can use a p19 tcu, but as for the ecu for the h23...
I'm not sure... I know the h22 is a p13.... hope that some of this helps. 
Swaps are funnn!
R.J. Axibal
President/Owner
I.D.K. Stre²twear Produkshunz, LLC.®
www.myspace.com/idkspComment
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The H23 uses a P14. Or, you can always go a chipped ECU route, which is useful for tuning.Originally posted by idkspaccordYou can use a p19 tcu, but as for the ecu for the h23... I'm not sure... I know the h22 is a p13.... hope that some of this helps. Swaps are funnn!1992 Prelude S w/swapped H22AComment
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thanks for you help. Now I'm devating between H23 or H22. The only problem is H22 ECU and TCM are hard to find.Comment
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I am running an H23 and its nice, I miss Vtec of the H22 but overall its still fun, Either swap is good. I got my ECU of Ebay honda parts connection or something like that, and worked well plus fast shipping. I like the H23 many pluses its cheap, torque monster, and Its a hell of a lot of FUN.Comment
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Which engine will most likely to pass smog in Cali? I read somewhere here that in order to maybe pass smog is to have the engine, tranny, ecu and tcu from the same model year. is it true?Comment
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The transmission and transmission computer have nothing to do with emissions.
If you have a USDM engine and ECU, you should pass smog just fine, assuming all the emissions components are functioning properly. JDM engines can cause more of a problem. If you get the H23A1, you don't have to worry... that's a USDM engine only.
The H22 TCU and ECU are not difficult to find at all. Ebay, junkyards, forums... You just need to look. Or you could get a full package from places like www.hmotorsonline.com (not dirt cheap, but I wouldn't trust anyone else, personally... I got my motor from them) and they'll supply everything for you.
As for a chipped ECU, as suggested... unless you get that tuned, it's a bad idea. That's a much more advanced modification. Not one that should even be considered for someone at this level.
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I got my motor from steve and he only had JDM ecu and if lives in places like cali they will automatically fail you for the the ecu, which I assume he does.Originally posted by deevergote
Either motor will pass smog if you run the USDM ECU and do the basics like cap and rotor plugs wires and a cat if yours is old, Me I did all that and still didnt pass my NOx emissions were too high like 3x too high. If that happen you just need to do seafoam or take apart the intake manifold and clean all the carbon built up.
Am I being a whore thread?
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thank you again for the adviced. I'm doing my swap when I get back from deployment, so I guess I still have time to look around for a good engine.Comment
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turbo that sumbish!!! h23 turbo is pure sex my friend. anyways yea, a p19 tcu and a p14 ecu
no
Accord turbo kit under $2k here
$30 HID kits here Thread
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I'm not exactly a fan of turbo.
I have an AEm intake and DC header on, will it fit the H22/H23?Comment
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the intake yes may just be a little small and not let the h22 live to the full power and the header may fit the h23 but wont fit the h22.Comment
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