I am interested in purchasing a P72 ecu for my prelude, I am wondering if anyone has one for sale or might have any input on what to look out for when swapping from the P13?

Thank you

 

dont do it. Your car cant run a p72 just plug and play. You need hondata or some chip ( which will probably blow ***).

 

read this
https://honda-tech.com/zerothread?id=567799

 

I want the P72 to be able to hook up a Hondata, I have the stock P13, unfortunately, Hondata in their wisdom has not caught on to the fact that ppl are using the H22A more and more.

Is there an issue when trying to hook up an OBDI P72 to a 92 Lude? You stated that it would not be "plug and play".

I appreciate the input, I currently have my H22 sitting on the palette that they shipped it to me on.

Here are my planned mods:
Adj. Cam Gears
P72 Hondata Chipped
Mill .030 off the head
Cold Air
2.5 inch catback

eventually i would like to boost and rebuild the low end with JE Pistons (low comp.) and Rods

 

yes u can use a p72 for hondata, but the thread the person above linked you to, states that a p72 on an h22 is worthless. Get a p28, cheaper and easier to get ahold of. Then get it tuned by a hondata tuner or learn the software, and you are good to go.

 

Is being that i have an obd1 prelude is there an issue with installing a P72?

I think I will get the P72 so that i can have the secondary intake runners, I would like to have as much of the stock capabilities of the car available.

I appreciate the advice, thank you.

 

Alrighty, if you have some monster cams in there, they wont like the air restriction at idle. (IE Jun cams)

p72's are usally pretty expensive. Anywhere from 200 up to about 275. Good luck on your setup.


Hondata isnt really necessary on a stock setup. Its more when you start doing head work and so on, that it would be ideal.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typemismatch &raquo;</TD></TR><TR><TD CLASS="quote">Is being that i have an obd1 prelude is there an issue with installing a P72?

I think I will get the P72 so that i can have the secondary intake runners, I would like to have as much of the stock capabilities of the car available.

I appreciate the advice, thank you.</TD></TR></TABLE>

Did you read the thread I posted?

let me quote something from it for you

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hondata &raquo;</TD></TR><TR><TD CLASS="quote">Actually, since nitrous control is now a standard feature of all Hondata systems, you will be able to use the nitrous output control (either the Aircon clutch or Evap solenoid) to drive the secondary runners. </TD></TR></TABLE>

 

Check my sig

I have both for sale

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typemismatch &raquo;</TD></TR><TR><TD CLASS="quote">I want the P72 to be able to hook up a Hondata, I have the stock P13, unfortunately, Hondata in their wisdom has not caught on to the fact that ppl are using the H22A more and more.</TD></TR></TABLE>

actually in their wisdom they havent gotten into it since programming it is MUCH mroe complex than a p28 or p72 and it is not cost effective for them.

 

you also get to use the stock knock sensors if you get a p72, and if you're already going to use those outlets for nitrous, there's nothing left for the butterfly's.

P72 is more expensive, but also more usefull for the H22.

 

http://www.importreview.com/re....html

this dyno shows that the p72 makes more power, i have both and i do notice more high end on the p72 but the p13 is much smoother for daily driving.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AzNpRiD3 &raquo;</TD></TR><TR><TD CLASS="quote">http://www.importreview.com/re....html

this dyno shows that the p72 makes more power, i have both and i do notice more high end on the p72 but the p13 is much smoother for daily driving.</TD></TR></TABLE>

who cares about high end...that dip across the MAJORITY of the powerband will make your car slower every time. not to mention it's probably detonating

 

i use a stock p72 to pass emissions ONLY.
i have used it to daily drive and power sucked from 2500-6000rpm...and i mean SUCKED hardcore.

 

what do you have for the hondata? just the base flash or do you have the rom editor and datalogger? where are you located?

i can't i.m. or post to the classified threads. i have a trial user status... sorry

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typemismatch &raquo;</TD></TR><TR><TD CLASS="quote">what do you have for the hondata? just the base flash or do you have the rom editor and datalogger? where are you located?
</TD></TR></TABLE>

I don't understand why you want to buy an ecu that's programmed
for someone else's car

Find a good hondata tuner in your area and have them program

one specifically for your car, otherwise you will be wasting your money

 

The point is not to use the ecu that is programmed for his car, but to get the p72 and hondata system and tune it for my car. You must think I am totally inept.

 

Right now I have a P13 JDM H22A ecu, the best tuning I can do is with a Apex-i V-AFC controller. That will work for me for now, however, when I have all the parts together to turbo the H22 I will feel way more comfortable with a Hondata system that will allow me to tune my fuel and ignition more precisely.

What I don't understand is why anyone is against someone spending their own, hard earned money on modifications to their car. All I seem to be hearing is "don't do it, it's not worth it". This statement, to me, appears to be alot of hot air, unsubstaintiated by hard facts. From everything that I have read, anywhere, the more control you have over your fuel and ignition, the better. Every one that is against spending money, says to use the P28, however there doesn't appear to be alot of justification for it except for cutting corners. I am highly opposed to cutting corners, I have alot of patience, I have been waiting for two years now, to get my H22, now that I have it, I want to take the time and make sure I have everything right. I am not some high school kid with no mechanical knowlege or funding, I am a fairly well established adult, working on building a flawless car. If you have the information to back up your claims from personal experience, please share it, however, if you are just surfing the web, regurgitating some quotes from someone else's posts, please, don't waste my time.

I am willing to purchase an ecu that has a base hondata flash for another car, the reason being, with the ROM editor, I can change the programming of the ecu to suit my car, right now I have a P13 that I cannot do any programming with, and having a P72 would be a step in the right direction. So as you can see, I have a set course of action in mind, I have thought this through and researched it for a fairly long time (I have been looking at information on Hondata for at least 6 months), what I am interested in is this: who has a P72 ecu that I can purchase for a reasonable price, preferably a stock one, I am not looking for cheap, I am looking for reasonable price and quality. Also: who has done this ecu swap, what am i going to have to change to get it to work, is there anything that is going to make this ECU swap difficult?

Yes, I did read the thread that was posted, what I got from that thread is, if you have the money to purchase a P72, do it, as it is the closest match to the stock P13 ecu, however, if you need a cost effective alternative, use the P28. The P28 is not even an option to me, since it ignores way too many variables that an H22 is capable of monitoring. Hacking the Hondata, to overcome the hack of using a P28, is just one too many hacks for me, all to save what $200?, if you don't have $200 to spare, why are you playing with your ECU anyway?!?! If you want to do a hack job, do it to your own car, when you blow up a $3K motor, it's your money, not mine. Don't give hack advice, someone, somewhere will be stupid enough to follow it, some poor kid will be out $2K - $6K or even more (depending on the motor and source), from your hack advice, it may not be your problem, but its just plain mean. Some poor kid is gonna throw a P28 on his motor, with no Hondata flash, "preparing to do it", and run his/her H22 up to 7500-8000 RPM and watch it go "BOOM", because the stock ecu map for a 1.6L motor says that it only needs so much fuel causing the afr to lean out, and the ecu can't tell the difference between a 1.6L and a 2.2L.

Sorry, I don't mean to "flame" anyone, I am just trying to explain my logic, if my logic is flawed, feel free to let me know.

 

YA, don't listen to them, I use a p72 on a BUILT Turbo H22, with a custom chip I created using my intution and CROME. Works awsome with all the features of a P13...You can use a p72 OR P28, BUT YOU NEED TO CHIP EITHER ONE OF THEM!!!!
Create you're own chip or use someone else's tune.
If you use a p28 U'll lose knock sensor capability, and IAB control, both are nice but not necessary in a TURBO app.. As stated before a straight plug and play with a p72 does not give you good results. But a chiped P72 using CROME can give the results your looking for much less then a Hondata.

**You can plug the P72 right into the p13 wiring harness with no issue, the issue is with the maps that are loaded into the ecu...***


Modified by MindEracer at 9:39 AM 9/15/2004

 

I have a p72 on my jun setup, and i wish i didnt have it. #1 knock sensor got its *** kicked and broken so we disabled it. #2 the secondary control is no good on my setup.

With the jun cams, they like to move tons and tons of air. If you enable the secondaries, they get no air and thus cause uber low idle and eventual stall. So in my specific application, p72 is no good. There is also a thread that states the p72 is useless in the FAQ. A p28 may do the same **** as a p72 in terms of IAB control if you rewire some stuff. As i had stated before, a p72 will run you between 180-245 bucks depending on how good a deal you get. I had gotten a fantastic deal thats why i went for it.

In any event, what type of setup do you have currently?????
what type of setup do you plan on having ?

 

I have a stock JDM H22A that i am putting in as soon as some of my parts get in.

I have cam gears, timing belt, and new valve cover(blue) on the way, I have CAI and 2.5" exhaust on the car now. I am going to pull together the parts over the next year to build a turbo kit for it. I plan on using a T3/T4 turbo, injectors, I was told 1G DSM turbo injectors should plug and play and give me the fueling i need, front mount intercooler. I kinda want to build my own turbo setup, I don't want a kit, because I am not a cookie cutter type person. I am going to get 9.0:1 pistons and eventually I would like to get cams. Not sure what kind of cams though, I am still used to V8 parts and Crower/Crane ect parts. I would like to shy away from USDM manf. cause I think the JDM will probably have a better idea of how to grind cams for my H22 since Crane/Crower are just starting to get into Hondas.

I am leaning toward stock Type-S cams, since they breathe better than the standard H22 cams.

I am contemplating a V-AFC for engine tuning until I build my turbo kit.

Thoughts?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typemismatch &raquo;</TD></TR><TR><TD CLASS="quote">I was told 1G DSM turbo injectors should plug and play and give me the fueling i need
</TD></TR></TABLE>

If you don't like to cut corners, then get some better injectors
then dsm 450's

Like stated before, look around for a stock p72
ecu if that's what you want.

 

I hadn't really looked into that yet, thanks for the heads up.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typemismatch &raquo;</TD></TR><TR><TD CLASS="quote">what do you have for the hondata? just the base flash or do you have the rom editor and datalogger? where are you located?

i can't i.m. or post to the classified threads. i have a trial user status... sorry
</TD></TR></TABLE>

Dude.. check your hotmail account.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">actually in their wisdom they havent gotten into it since programming it is MUCH mroe complex than a p28 or p72 and it is not cost effective for them.</TD></TR></TABLE>

No it's not... But they do like the fact that they only have to maintain one codebase for all the Civic/Integ ECUs... They could have just as easily added P13 support... I think that's more along the lines of laziness... Everyone with an H22 that wants Hondata uses a Civic/Integ ECU so why bother adding P13 support... It helps them sell P28s... er I mean converted P05s/P06s...