Running JDM H22A with Accord ECU

[Roger]

Just had an H22A swap into my 95 Accord EX done a couple days ago but the shop owner "forgot" to tell me that the installer couldn't get my car running with the P13 ECU. They narrowed the problem down as a bad ecu so I sent it back to the place I bought it from to have it checked and replaced if neccessary. I ran my car pretty hard not knowing that my stock ecu was hooked up instead of the p13 and the engine started pinging pretty bad at around 5700 rpm, a little after the vtec kicks in. My question is, can I run the stock ecu w/o doing any damage to this motor until I get my p13 ecu back?I know the H22a has higher compression and I'm using premium fuel. I know my stock ecu doesn't have a knock sensor input to retard ignition timing just in case it pings again, and I won't drive it hard until the right ecu is in.
Thanks in advance,
Rog

 

[UDT]

Oops, forgot to mention that I have 95 accord ex that also has vtec.

See now theres the thing that gets me im confuzed? Are you talking about another car or did you not think people would know the H22 was Vtec? And if so why come here to ask questions to people you dont think know it's Vtec engine, wich leads me to believe thats not that case which leads me to my next point if its not another car and it's not that you dont think we wouldint know the H22 is a Vtec engine then you must just like saying Vtec

 

[Roger]

Some people actually think that the ex is like an lx and doesn't have vtec. Keep forgetting that this is a hybrid forum. Please excuse my newbiness

 

[UDT]

Yea ima be swapin a h22 in this bitch in april
LINK

 

[reckedracing]

they probably couldn't get the h22 to run right with the p13 cause they don't know how to wire it up right

if you are running the f22 vtec computer, i would avoid going into vtec...

if its pinging my guess is that the fuel curves are incorrect for the single cam...

wait till you get the p13 in before you run the shit out of the h22...

do they know about the a6 and a11 pins needing to be switched?

 

[Roger]

I'm going to ask them about the a6&a11 pins today. I haven't gone above 4000 rpm so I'm just grannying it right now.

 

[UDT]

aww i see your point being that its a newer (newer then 93) accord EX = Vtec ECU yeah i guess that would be good to point out. Its just i didnt see what you were geting at so i figured i would make fun

 

[dohcvtec_accord]

Don't switch the pins unless you're running the P13 ECU.

And the advice about not going into VTEC with the F22 ECU....kinda tough to do, since VTEC engages at around 2800 rpm on that ECU.

You REALLY don't want to be running that engine on the F22 ECU.

Go to http://www.h22a.org , print out the page that tells exactly what you have to do to wire the H22 into an EX Accord (about the easiest swap possible, it's really tough to fuck it up), and give the page to the shop owner.

 

[UDT]

what about just disconnecting the Vtec solanoid for the time being?

 

[dohcvtec_accord]

I suppose that could be done, but he'll still be experiencing the knocking. Best bet is just to get that P13 running right. It's NOT hard. With a car that already wired for VTEC, all that has to be done is a wire for the knock sensor, a wire for the IAB, lengthening a few other wires, and switching A6 and A11 at the ECU. That's it. A 5-year-old could do it.

 

[reckedracing]

what is the vtec engagement for the f22?

is it really 2800?
not trying to sound dumb, but it can't be THAT low can it...?

 

[dohcvtec_accord]

It is indeed 2800 rpm or so. I know this because I had a tiny VTEC light hooked up on my dash while I still had my F22B1 in there. The VTEC light came on anywhere between 2600 and 3000 rpm, depending on engine speed and throttle angle. You couldn't hear it or feel it, since single-cam VTEC is worthless (it exists only on the intake side of things, and is only there to improve fuel economy).

So when I plugged my F22 ECU into the H22-equipped car, it would bog HORRIBLY between 2800 and 4500 rpm. The loss in power was amazing, it felt like an Escort or Metro or something.

 

[Roger]

I did give a print out of the 5th gen swap faq from H22A.org to the guy doing the swap. Imagine the look on my face as I was driving home, after doing a 100mph WOT pull on the freeway, and finding the p13 ecu sitting in my passenger seat! I was like WTF Another question I had is if the p13 ecu is the same for both 5speed and auto transmission? I been told so may different things so I figure I'd ask here too. I'm asking cuz my car is an auto if there was a possibility that I got the wrong ecu.

Hey dohcvtec_accord, are you a also a member of Nasioc?

 

[dohcvtec_accord]

Nope, the two ECU's are different. Different fuel map for the auto, plus some other stuff I'm not entirely familiar with, having never messed around with auto trannies or their computers. It's entirely possible you got an auto ECU, and that's why he's having trouble.

To answer your other question, no I'm not on NASIOC, I'm on clubwrx.net I hear alot of people are defecting their from NASIOC, I don't really know why, I never bothered to learn the politics. I love clubwrx.net, it's the only WRX board I post on.

 

[Roger]

Just talked to the guy who did the install and no, he didn't switch the A6 &A11 pins, He said the only thing he did was run a shielded cable from the knock sensor to the ecu. Looks like there was probabaly nothing wrong with the ecu in the first place. I might be doing this myself when I get the p13 back but I don't have any wiring diagrams for the accord or prelude.

 

[driver1]

buy a helms

 

[H22AdelSol]

Yea ima be swapin a h22 in this bitch in april

welcome to the hybrid h22 club
maybe youll be lucky like me and sieze yours