I have a 94 OBD1 honda accord. I am putting the 92-95 JDM h22a engine in. I didn't purchase the ECU. I plan on using a Hondata system. The h22a factory ecu isn't supported by hondata. I need the p28 to plug the honda system into.

My question is will I be able to drive the car with the p28 ecu installed for about a month without any problems?

 

Are you planning to use a stock p28 for about a month?
Either use the P30, or a P28 with Hondata, I wouldn't dirve around with only a p28.

 

Yes I will be using this for about a month, but I hear the H22 has a second runner/butterfly which the p28 will not open, the p72 will which is from a gsr. I think I may need a p72.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by abeaujuin &raquo;</TD></TR><TR><TD CLASS="quote"> I hear the H22 has a second runner/butterfly which the p28 will not open, the p72 will which is from a gsr. </TD></TR></TABLE>

That's correct. However, a lot of people are choosing the p28 since it's cheaper. The p72 also looks for the knocksensor and the EGR, which the p28 doesn't recognize.

As far as the IAB, a lot of people are running it constantly open.

I would choose the p28.

 

If that's the case I don't see the difference in price for the p28 and the p72. They both are going for about $250. Plus I really want to have the car run fully functionally for that one month period. I understand that it may run a little lean or rich but they say it's the best match cause all componets will work.

 

Same price? no, but if you can get a p72 for 250 that is already compatible with hondata then go for it.

Regardless, I wouldn't use a stock p28, I don't know about the P72, but to be on the safe side, why don't you wait for a month? The basemaps are different. One is for a civic and the other for an integera. I would wait. BTW how much engine work have you done to the car?

 

I would love to wait, I have an F22 Vtech with a drag kit 6psi, The engine has 243k on it. It's drinking oil. I use synthetic oil $5 a quart. I can't keep doing this. I need to change the engine, I figured this is a perfect time to go H22 boosted. I brought the engine without the ecu or tranny. I am using my f22 tranny for the long gears. I would have brought the H22 ecu, but I am planning on boosting it and the Hondata would do the job correctly as far as tunning is concerned.

I don't have much time nor money to waste, so I am planning on driving the car after the engine swap for one month as I get the money together and stop spending it on oil, then get the Hondata with the turbo option $500, then get it tuned, $425, then get the manifold for the H22 from drag $450. Then the 440cc injectors $400 then the cams $600. The price gets up there. I just don't want to have to spend $250 on a p13 then turn around and spend $250 on a p72 just to get it to work with the Hondata.

 

If he ran a p28 with his h22a what hondata chip should he use. I ask cause a friend will be putting in a p28 in his h22a but what chip will need to help with the fuel and timing maps??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by abeaujuin &raquo;</TD></TR><TR><TD CLASS="quote">I just don't want to have to spend $250 on a p13 then turn around and spend $250 on a p72 just to get it to work with the Hondata.

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I see what you are saying, but if I were you I would do the swap and and save up for boost. I've seen p13 go for a little more than 100 dollars. It's either an extra 150 dollars for the p13, or 250 for the p28 and a few hundred dollars for the hondata and an extra few hundred for tuning. I think spending the money for p13 is a wise decision, but why don't you post a topic in the prelude forum and ask them if it's safe to drive an h22 with stock p72? As far as a stock p28, I know that people will tell you to stay away from it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H22aAccord &raquo;</TD></TR><TR><TD CLASS="quote">If he ran a p28 with his h22a what hondata chip should he use. I ask cause a friend will be putting in a p28 in his h22a but what chip will need to help with the fuel and timing maps??</TD></TR></TABLE>

I would use the s200. Hondata is nice, so i've heard, but there are other stand alone and chips out there. What type of engine work has your friend done to his car? If it's very basic stuff then a hondata might be an overkill.

 

lets get a few facts straight. p28 and p72 both dont use EGR. the p72 controls the IAB and the knock sensor. both of which are pretty pointless on an h22a. so a p28 is more than enough.

running a stock p28 on an h22, runs is dangerously lean, you might as well just run a stock f22 ecu in there and **** up ur engine that way,

what I recommend is socketing the p28 and getting an h22 map for the p28. then you will be safe. personally in my opinion, hondata is just hype, there's nothing you can't do with a chipped ecu that u can do with hondata.

the only problem is finding tuners that know how to edit the roms on a chipped ecu. so that would be the only reason to go hondata, if u can only find ppl that know how to tune hondata.

if you need I have a good base map for the h22 on a p28 ecu. I cleaned up the map a bit more on the dyno on a friends mostly stock h22 with the usual bolt ons, so its partially tuned. to fine tune it I would need to strap your car on the dyno and go from there.

but in any case, please dont go and run the stock p28 on the h22, ur gonna be hurtin that nice engine, hehe

 

yea, listen to ed.. He's straight up and his FACTS ARE CORRECT!!


izzle.. j00bez ON POINT GAME TIIIIIITE!!!

 

i'm running a chipped p28 on my h22a...i removed the secondary butterflies though to take advantage of a more free flowing intake manifold, as well...i'm not quite positive as to all the modifications done, but i do know that my ignition timing in vtec is advanced like crazy, and the fuel maps are set a little rich...

 

so just tell my friend to get a p28 but get a chip with the h22a fuel and timing mas correct?

 

EddieBX: how much u looking for that chip man so i can tell my boy/

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eddiebx &raquo;</TD></TR><TR><TD CLASS="quote">p28 and p72 both dont use EGR.
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That's correct, thanks for the correction. I didn't mean to spread confusion.