JDM TCU for an H22 in a 91 Accord

I have asked this question in some threads I started, but never started an independent thread for this question. I have a JDM H22 with an automatic tranny in my 91 accord. Everything is running fine, except my car is shifting at 6k rpm's, and I know the engine is capable of so much more. The Tranny computer is for my 91 accord. I am looking for a tranmission control unit out of an ODBI JDM car with a H22 in it. Dose anyone know where I can find this? Thanks for your replys!

Ok maybe I'm wrong here (and going to make myself look like a dumbass) but I've never heard of a tranny control unit. Are you talking about an ECU? If so look here: https://passwordjdm.com/index.php?page=shop/flypage&product_id=122&category_id=ecu

CivicSpoon if you call your self a dumbass i must call myself one too case i have no clue qwhat the heck that is.

You guys aren't dumbasses. You are smart, because you have a manuel <spelling> tranny and I have an automatic. If you have a stick the tranny computer is actually is included in your ECU. An auto is more advanced so it needs its own computer. My ECU is in my door panel. My TCU is under my passanger seat. if you go on Ebay and do a search for a TCU you should be able to see pic's of them. Thanks for the reply

Let me ask you a quick question. I just bought a h23 for 800. I want to put it into my 91accord, but it is automatic. I just wanted to know if it would work with my 94 accord manual tranny i already have in my car, or do I need to purchase a another h23 manual tranny and do that swap

think ur gonna need an h series tranny. either that or th tranny that came in the S prelude. i think that tranny is supposed to hook up w/ da h23

think ur gonna need an h series tranny. either that or th tranny that came in the S prelude. i think that tranny is supposed to hook up w/ da h23

So I am going to have to change my tranny, do you know where I can get one from

think ur gonna need an h series tranny. either that or th tranny that came in the S prelude. i think that tranny is supposed to hook up w/ da h23

Actually, All H and F series trannies are interchangable. (excluding the F20C and F22C)

Actually, All H and F series trannies are interchangable. (excluding the F20C and F22C)

So your saying my 94 accord tranny can work with the h23 engine. If so would I have to change the gear ratio.

Back to the orginal orgin of this thread. TCU anyone?

Back to the orginal orgin of this thread. TCU anyone?

try 92lude.com or the dealer. You didn't find one at ebay.

You can find a USDM one on Ebay, the dealer dosen't carry a JDM TCU, and I need to check out the site that you gave me. Thanks for the input

Oh yea try totaljdm.com too. I am 99 percent sure that website should have it!

weird, my civic didnt have a TCU, was all in the ECU and for a manual, the tarnny computer isnt in the ECU, would it be? I mean thers nothing for the computer to know about the tranny excetp for if its in reverse, and how fast you are going???

maybe thepartstrader.com as wel, probably wont find a JDM one though. but maybe can get one from an early vtec prelude that came with an auto. i think thay were available with an auto, GSR's/ITRS/SI's arent though so who knows

So your saying my 94 accord tranny can work with the h23 engine. If so would I have to change the gear ratio.

Yes, it can work. No, you don't have to change anything. Your stock accord ratios might not do much justice to the h23; but it would still work regardless.

Yes, it can work. No, you don't have to change anything. Your stock accord ratios might not do much justice to the h23; but it would still work regardless.

Yo I really appreciate your help, you just saved me a headache

vtec 4th gens never came with an auto tranny

thats what I was kinda thinking since the high performance versions of the hondas never seem to come with autos, and is still going like that

Well, you two are right USDM H22'S did not come with an automatic tranny untill 96. However JDM H22's did come with automatic trannies from 92-95. Thats what I have in my car an automatic JDM H22. I am speaking to someone in Fort Laurdale who may have one. Thanks for all of your replies, and I will keep you posted.

Well, you two are right USDM H22'S did not come with an automatic tranny untill 96. However JDM H22's did come with automatic trannies from 92-95. Thats what I have in my car an automatic JDM H22. I am speaking to someone in Fort Laurdale who may have one. Thanks for all of your replies, and I will keep you posted.

Thanks I looked at the two tranny's and compared the gear raios from the 94 accord manual tranny and the h23 manual tranny. The accord tranny would do damage with that engine. Meaning that shit will run. Due to the fact that if I were to go vtec with this tranny the vtec would automatically chip in at 4200. Because the tranny has the mind of the accord vtec. So it chips in alot harder and clearer. I want to top out the car to see how much damage the car does upstairs, but there are alot of state troopers at this time of the year due to the 9/11. But neway thank you for allyour replys. And did you find your TCU! I hope you did.

Appently <spelling> I did! This guy says he has one, but I think it is from a F22 which is allready in my car. I am putting it in as soon as I get it to see if the red line pushes past 7k which it should easiely do if I have the right TCU. If not it will be back to the drawing board, but that's what building cars up is all about. Trial and error. Once all of the errors are elimated you come out on top with a fast efficient 4 cylinder engine that can wax almost any all engine 6 cylinder out there. That's my goal! I will supply you guys the info when I find out if I found the right TCU. Glad to hear your car is running good darhemady1!

Thanks I looked at the two tranny's and compared the gear raios from the 94 accord manual tranny and the h23 manual tranny. The accord tranny would do damage with that engine. Meaning that shit will run. Due to the fact that if I were to go vtec with this tranny the vtec would automatically chip in at 4200. Because the tranny has the mind of the accord vtec. So it chips in alot harder and clearer. I want to top out the car to see how much damage the car does upstairs, but there are alot of state troopers at this time of the year due to the 9/11. But neway thank you for allyour replys. And did you find your TCU! I hope you did.


why are you saying that the tranny is going to make vtec hit harder and clearer? the tranny puts the power from the engine to the axles, the engine maks the powrer, and the engines ECU takes in readings and says when VTEC hits in. you can change your gear ratios and thats not gonna change when vtec hits in, if you are runnign the accord VTEC ecu then your vtec would kick in when it did when the stock F22 vtec was under the hood. when you swap to the H22 ECU (dont know the code) then the H22's vtec will kick in when honda programmed it to, not when your transmission tells it to.

94tegRS is right.

OK as far as my TCU it did not work out for me. I plugged in a TCU I found for a 92 Prelude and the red line stayed the same and the S light came on so I put my stock one back in. If anyone has any suggestions please keep me posted

I am looking for a At Control unit or the schematic for a 1991 honda accord Ex coup.can anyone help.

I have a control unit from a 92 USDM prelude that did'nt give me the performace I was looking for, but would work in your car because it plugged right into my 91 accord, or if you want one made specifically for your car the name of the place is auto computer exchange and the number is 1-877-489-4659. Hope this helps.