p28 ecu conversion success
04-05-2006 | 09:19 PM
#1
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Joined: Mar 2006
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From: sacramento, ca, sacramento
p28 ecu conversion success
Alright so today I bought a p28 ecu from a guy put it in my ride and it felt faster for sure I converted my ecu from obd2 to obd1 I love it it feels like vtec kicks harder and everything so is this what's supposed to happen or what plus its not chipped so my check engine light is on basicly what do I do from here?
04-07-2006 | 08:58 AM
#6
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From: Portland, OR, US
Re: (JDM B16A)
Ok to help you out, is the only thing you did to switch to OBDI is convert the ecu??
If so you need to visit that big red search button in the upper right hand corner and learn what is involved with switching from OBDI to OBDII. Also once that is done, if your going to run that P28 you need to have it tuned for your motor, ie. Hondata, Uberdata, etc. Otherwise your running the risk of seriously messing up your engine.
Also I wouldn't title your thread ecu conversion success since it wasn't.
If so you need to visit that big red search button in the upper right hand corner and learn what is involved with switching from OBDI to OBDII. Also once that is done, if your going to run that P28 you need to have it tuned for your motor, ie. Hondata, Uberdata, etc. Otherwise your running the risk of seriously messing up your engine.
Also I wouldn't title your thread ecu conversion success since it wasn't.
04-07-2006 | 11:32 AM
#7
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Joined: Oct 2002
Posts: 16,357
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From: Cantonment, FL
Re: (SpeedFreak77)
Aight there are a few things i want to go over with this topic. Your options of ecu's are the following:
p13 (92-95 prelude)
p28 (92-95 civic ex and one of the del sol models)
p72 (92-95 gsr integra)
http://www.car-parts.com is a good site to find these ecu's in the junk yards.
Conversion Harness:
There are quite a few people who offer the harness to convert to an OBDI ecu:
http://www.jkobd.com
http://www.boomslang.us
http://www.kingmotorsports.com (boomslang)
http://www.phearable.net (Honda-tech sponsor, I can vouch for his awesome customer service and quality)
....i know there are prolly more people that make harnesses but these are just the ones off the top of my head.
NOTE:
Remember that when you are ordering the harness, be sure that you are getting OBD2A - OBD1.
Chipping and Socketing
Chipping involves soldering a socket onto the ecu board that will accept an eprom chip that can be used to overwrite the stock/modified fuel/ignition tables. These chips are rewriteable meaning you dont have to use a new chip everytime you change something. The parts to chip/socket an ecu can be found here: http://www.moates.net/product_...id=42.
Extra INFO on the ways of tuning:
aight i wanted to add how the actual process of burning the chips, etc is done.
When the tuner (or you) is making adjustments on the motor he is using an Ostrich.
http://www.moates.net/product_...id=57
The Ostrich is used to complete the tune; it is connected from computer to the ecu during tuning. Once the tune is done via laptop, you plug a programmer into the USB of the computer. http://www.moates.net/product_...id=48
The programmer burns the info from the computer onto the eprom chip that is to be placed onto the socket in your ecu after tuning is complete.
P13
The p13 ecu again is from the 4th gen Prelude (92-95) H22. When it comes to tuning this ecu, its very limited compared to the p28 and p72. http://www.hondata.com has support for the p13 but like i said, it has very limited tuning adjustments compared to the other two.
Here is how to convert a p13 from auto to manual:
http://www.pgmfi.org/twiki/bin...anual
P28
This comes from the 92-95 civic ex. This ecu does not read for EGR and knock sensor and does not (from the factory) have the ability to control the secondary intake valves (IAB's). You can however manipulate the ecu to control them by doing a couple simple steps. If you do not remove the iab valve and plug in this ecu, you will lose a good amount of power after 5500 due to the valves not opening. I removed the valves by taking off the plenum of the intake manifold and simply unscrewing the valves from the shaft and leaving the shaft in place.
If for some reason you cannot find a manual transmission p28, dont worry...its ok. The auto ecu can be manipulated very simply to become a 5 speed ecu.
go here to see how to go from auto to manual with a P28:
http://www.pgmfi.org/twiki/bin...anual
The conversion to make the p28 control the IAB's can be found here:
http://www.pgmfi.org/twiki/bin...ToP28
The p28 is the cheapest and most abundant when compared to the p72.
P72
This comes out of the 92-95 Gsr integra. It retains all functions of the p13 which means you dont have to remove the iab's or modify the ecu to be able to control them. This ecu, in most cases, is much more expensive than the p28. Generally, its 50-100 dollars more expensive. Technically, this is the best ecu use sense it retains all the sensors, but for the extra price you pay for it, you could have the p28 modified to do a certain task and not hurt your wallet as much.
For more extra info if you want to explore yourself view these related and have a look around:
http://www.pgmfi.org
http://www.phearable.net
http://www.hondata.com
http://www.hrtuning.com
http://www.moates.net
Hope this helps
basically, you should have done a LITTLE more research before you decided to just slap an ecu in there
Modified by 98vtec at 8:12 PM 4/7/2006
p13 (92-95 prelude)
p28 (92-95 civic ex and one of the del sol models)
p72 (92-95 gsr integra)
http://www.car-parts.com is a good site to find these ecu's in the junk yards.
Conversion Harness:
There are quite a few people who offer the harness to convert to an OBDI ecu:
http://www.jkobd.com
http://www.boomslang.us
http://www.kingmotorsports.com (boomslang)
http://www.phearable.net (Honda-tech sponsor, I can vouch for his awesome customer service and quality)
....i know there are prolly more people that make harnesses but these are just the ones off the top of my head.
NOTE:
Remember that when you are ordering the harness, be sure that you are getting OBD2A - OBD1.
Chipping and Socketing
Chipping involves soldering a socket onto the ecu board that will accept an eprom chip that can be used to overwrite the stock/modified fuel/ignition tables. These chips are rewriteable meaning you dont have to use a new chip everytime you change something. The parts to chip/socket an ecu can be found here: http://www.moates.net/product_...id=42.
Extra INFO on the ways of tuning:
aight i wanted to add how the actual process of burning the chips, etc is done.
When the tuner (or you) is making adjustments on the motor he is using an Ostrich.
http://www.moates.net/product_...id=57
The Ostrich is used to complete the tune; it is connected from computer to the ecu during tuning. Once the tune is done via laptop, you plug a programmer into the USB of the computer. http://www.moates.net/product_...id=48
The programmer burns the info from the computer onto the eprom chip that is to be placed onto the socket in your ecu after tuning is complete.
P13
The p13 ecu again is from the 4th gen Prelude (92-95) H22. When it comes to tuning this ecu, its very limited compared to the p28 and p72. http://www.hondata.com has support for the p13 but like i said, it has very limited tuning adjustments compared to the other two.
Here is how to convert a p13 from auto to manual:
http://www.pgmfi.org/twiki/bin...anual
P28
This comes from the 92-95 civic ex. This ecu does not read for EGR and knock sensor and does not (from the factory) have the ability to control the secondary intake valves (IAB's). You can however manipulate the ecu to control them by doing a couple simple steps. If you do not remove the iab valve and plug in this ecu, you will lose a good amount of power after 5500 due to the valves not opening. I removed the valves by taking off the plenum of the intake manifold and simply unscrewing the valves from the shaft and leaving the shaft in place.
If for some reason you cannot find a manual transmission p28, dont worry...its ok. The auto ecu can be manipulated very simply to become a 5 speed ecu.
go here to see how to go from auto to manual with a P28:
http://www.pgmfi.org/twiki/bin...anual
The conversion to make the p28 control the IAB's can be found here:
http://www.pgmfi.org/twiki/bin...ToP28
The p28 is the cheapest and most abundant when compared to the p72.
P72
This comes out of the 92-95 Gsr integra. It retains all functions of the p13 which means you dont have to remove the iab's or modify the ecu to be able to control them. This ecu, in most cases, is much more expensive than the p28. Generally, its 50-100 dollars more expensive. Technically, this is the best ecu use sense it retains all the sensors, but for the extra price you pay for it, you could have the p28 modified to do a certain task and not hurt your wallet as much.
For more extra info if you want to explore yourself view these related and have a look around:
http://www.pgmfi.org
http://www.phearable.net
http://www.hondata.com
http://www.hrtuning.com
http://www.moates.net
Hope this helps
basically, you should have done a LITTLE more research before you decided to just slap an ecu in there
Modified by 98vtec at 8:12 PM 4/7/2006
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04-07-2006 | 04:43 PM
#10
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Joined: Mar 2002
Posts: 14,296
Likes: 1
From: Charleston, SC
04-11-2006 | 11:53 AM
#14
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Joined: Mar 2002
Posts: 14,296
Likes: 1
From: Charleston, SC
Re: (NAmodified)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NAmodified »</TD></TR><TR><TD CLASS="quote">there is nothin wrong with runnin a p28 w/ an h22</TD></TR></TABLE>
for a hondata set-up.
for a hondata set-up.
04-11-2006 | 01:09 PM
#15
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Joined: Dec 2003
Posts: 4,326
Likes: 3
From: Respek my Fresh
Re: (NAmodified)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NAmodified »</TD></TR><TR><TD CLASS="quote">there is nothin wrong with runnin a chipped p28 w/ an h22</TD></TR></TABLE>
^^ Fixed it for you. Single cam fuel/ignition maps are not the same as the H22 maps.
^^ Fixed it for you. Single cam fuel/ignition maps are not the same as the H22 maps.
04-11-2006 | 01:10 PM
#16
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Joined: Mar 2004
Posts: 15,050
Likes: 1
Re: (IHateJDM)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IHateJDM »</TD></TR><TR><TD CLASS="quote">^^ Fixed it for you. Single cam fuel/ignition maps are not the same as the H22 maps.</TD></TR></TABLE>
yeah really, if you go to importreview.com, look where even a p72 was way off at low rpm, think about a p28, even worse, not to mention, the IABs would stay closed....
faster
yeah really, if you go to importreview.com, look where even a p72 was way off at low rpm, think about a p28, even worse, not to mention, the IABs would stay closed....
faster
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