Converting a P28 Auto Ecu to a P28 Manual - D-series.org

Go Back   D-series.org D-series Knowledge Factory DIY Forum

D-Series.org is the premier Honda All Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 05-11-2011, 05:07 AM   #1 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default Converting a P28 Auto Ecu to a P28 Manual

ok since i didnt see a DIY on here i wanted to make one. why keep sending people to other forums when we can just point them to our very own DIY.

********BACKGROUND INFO

there seems to be a bit of confusion on differentiating between a manual and automatic ecu, let me clarify.

MANUAL P28-A0. P28 is the type of ecu, the "A" is for made in united states, and "0" is a manual ecu

AUTOMATIC P28-A5. this is the same way, except for being a "5" instead of a "0". this means that the ecu is for an automatic car.

TOOLS YOU WILL NEED:
soldering iron - make sure it is clean
some braided copper solder removal
suction tool - optional to remove solder
thin rosin core solder
very small paper clip
steady hands

WHAT YOU WILL BE DOING.
you will be removing the RP18 and RP17 resistors. in place of the RP18 resistor you will be installing a jumper wire, a paper clip works great, already bent, best width.



ok the first thing to do is check and make sure you have the correct ecu, you can look in 2 places. 1st is on the case, but you can swap cases, so the best place to look is on the inside of the cover where the plugs go




here is the area we will be working with



so begin by turning the chip face down and place the copper braid between the solder and soldering iron. this will head the copper braid and pull the solder into the braid. ***check you tube for good videos, "SOLDER REMOVAL"

here is my first resistor removed










__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-11-2011, 05:08 AM   #2 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default

now that we have one removed, go ahead and remove the other. it is best to remove all solder than you can, it makes live a whole lot easier





i dont know about anyone else, but for me, its pretty inevitable that you will get the board dirty a little, just dont hit it with the soldering iron, here is my pic of all the solder removed that i could get removed








now we install our jumper wire like so, i used a small paper clip(very small), you can also use a safety pin and bend that. the big limitation is the diameter of what you are using.








ALL DONE!
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by Demon_12-21-2012; 05-11-2011 at 05:15 AM.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Old 05-11-2011, 05:09 AM   #3 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default

here is a pic of the first ecu i ever did










as you can see the first one i did was kinda shabby, but it does work. i have it in the car now and have put 400miles on it since this past friday
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by Demon_12-21-2012; 05-11-2011 at 06:07 AM.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
 
Old 05-11-2011, 05:09 AM   #4 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default

ALSO**************

i know i am not the only one who does this, i know first hand finding manual p28 ecu's is a challenge. and there has to be more people converting them. so i invite other uses on here to post their before/after photos of their converted ecu. p28's only please, i dont want people getting confused between a p28 and p2p.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by Demon_12-21-2012; 05-11-2011 at 06:08 AM.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Old 05-11-2011, 06:56 AM   #5 (permalink)
D-series PIMP
 
uxaxi's Avatar
 
iTrader: (13)
Join Date: Nov 2007
Location: Tacoma Wa
Posts: 1,104
Rep Power: 12 uxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to all
iTrader Score: 13 reviews
Default

Does it work the same way converting from manual to auto?
except remove the jumpers and put in the proper resistors?
uxaxi is offline   Reply With Quote Quick reply to this message
Old 05-11-2011, 07:00 AM   #6 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default

no, you have to have the transistors or whatever they are called. if you have a manual ecu just sell it and pick up an auto ecu.

plus you can make bank off of a manual ecu lol
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Old 05-11-2011, 07:03 AM   #7 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default



a manual ecu does not have these
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Old 05-11-2011, 07:04 AM   #8 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default

here is a manual ecu - ignore the yellow arrows, they are point to a capacitor that blew. you can see where the manual ecu does not have the black things and the auto does


__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Old 05-11-2011, 08:07 AM   #9 (permalink)
D-series PIMP
 
uxaxi's Avatar
 
iTrader: (13)
Join Date: Nov 2007
Location: Tacoma Wa
Posts: 1,104
Rep Power: 12 uxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to all
iTrader Score: 13 reviews
Default

K so the auto has 2 transistors/fet's.

Do you happen to have the numbers on those two pieces?
I know it sounds weird me wanting to convert to auto, but i have a p06 converted to vtec/chipped i need to convert to auto / remove vtec =\

Or buy an auto p06, but everyone wants to rape me on the price
uxaxi is offline   Reply With Quote Quick reply to this message
Old 05-11-2011, 08:21 AM   #10 (permalink)
D-series PIMP
 
uxaxi's Avatar
 
iTrader: (13)
Join Date: Nov 2007
Location: Tacoma Wa
Posts: 1,104
Rep Power: 12 uxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to alluxaxi is a name known to all
iTrader Score: 13 reviews
Default

Anyways, good write up man, i'm sure it'd help a lot of people who want to convert to manual, and it costs almost nothing to do.
uxaxi is offline   Reply With Quote Quick reply to this message
Old 05-11-2011, 12:48 PM   #11 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default

yeah it costs next to nothing. and im not 100% sure on converting the other way. you may want to pm a few members on here about that
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Old 05-26-2011, 05:15 PM   #12 (permalink)
D-series PIMP
 
4D2Envy's Avatar
 
iTrader: (13)
Join Date: Jun 2010
Location: Detroit Michigan
Posts: 1,131
Rep Power: 11 4D2Envy is fly like an eagle4D2Envy is fly like an eagle4D2Envy is fly like an eagle4D2Envy is fly like an eagle4D2Envy is fly like an eagle4D2Envy is fly like an eagle4D2Envy is fly like an eagle4D2Envy is fly like an eagle4D2Envy is fly like an eagle4D2Envy is fly like an eagle4D2Envy is fly like an eagle
iTrader Score: 13 reviews
Send a message via Yahoo to 4D2Envy
Default

Thinking about just completely starting to do this as soon as I get a new soldering iron and such.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
"My Car Isn't Leaking Oil, It's Sweating Horsepower!"
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
4D2Envy is offline   Reply With Quote Quick reply to this message
Old 05-26-2011, 05:21 PM   #13 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default

its not that bad man, just takes patience and steady hands mine is still running strong since the first post in this thread
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Old 05-30-2011, 08:16 PM   #14 (permalink)
D-series lover
 
phtboy03's Avatar
 
iTrader: (5)
Join Date: Sep 2010
Location: Alabama
Posts: 246
Rep Power: 10 phtboy03 smells like Boratphtboy03 smells like Boratphtboy03 smells like Boratphtboy03 smells like Boratphtboy03 smells like Borat
iTrader Score: 5 reviews
Default

I just got done converting my ecu about 15 minutes ago, I haven't got my CRX out of the shop yet so I don't have a car to test it on right now, but it looks close enough to your pictures so hopefully it will work.

This is a great wright up on how to convert the ecu. It definitely isn't had hard as I thoug it was gonna be, but I didn't have the suction tool to get the old solder out, so I had to make due with my paper clip.

If you don't have a suction tool then you can do like did, and heat up one side while pushing the paper clip through the other side. It works better if you have two people, one to hold the ecu and solder iron, while you push the paper clip through the other side.
__________________
M$. Co$tly Ob$e$$ion
You will be missed

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Hicka-bicka-boo
phtboy03 is offline   Reply With Quote Quick reply to this message
Old 06-03-2011, 02:32 PM   #15 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default

^ true, but its always best to remove as much solder as possible. the suction tool IMO sucks ass. i like the braided copper better, it absorbs the solder.

and i did that trick with heating the solder or heating directly on top of the resistor to help pull it out. but you just have to be careful to not knick the board and fk anything up
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Old 06-05-2011, 10:49 PM   #16 (permalink)
D-series lover
 
barkin''s Avatar
 
iTrader: (1)
Join Date: Apr 2011
Location: California
Posts: 128
Rep Power: 9 barkin' is trying to make new friends
iTrader Score: 1 reviews
Default

Quote:
Originally Posted by Demon_12-21-2012 View Post


a manual ecu does not have these
So does that mean when converting to manual those two things (not RP17 & RP18, but the things referred to in the pic) need to be removed as well, or are they ok to stay?
barkin' is offline   Reply With Quote Quick reply to this message
Old 06-05-2011, 11:02 PM   #17 (permalink)
Formally D_Tuned
 
Tw34k's Avatar
 
iTrader: (13)
Join Date: Oct 2008
Location: Jax FL
Posts: 2,884
Rep Power: 19 Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!
Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!Tw34k is the fucking MAN!!!!
iTrader Score: 13 reviews
Default

Quote:
Originally Posted by barkin' View Post
So does that mean when converting to manual those two things (not RP17 & RP18, but the things referred to in the pic) need to be removed as well, or are they ok to stay?
They are called "high side switches" and yes they are ok to stay. By changing the resistor configuration you are disabling the circuit that uses them all together.

They are basically a Mosfet Transistor or "relay"
__________________
Quote:
All I ever wanted was to pop vtec...
Tw34k is offline   Reply With Quote Quick reply to this message
Old 06-05-2011, 11:16 PM   #18 (permalink)
D-series lover
 
barkin''s Avatar
 
iTrader: (1)
Join Date: Apr 2011
Location: California
Posts: 128
Rep Power: 9 barkin' is trying to make new friends
iTrader Score: 1 reviews
Default

thank ya sirr!
barkin' is offline   Reply With Quote Quick reply to this message
Old 06-06-2011, 04:00 AM   #19 (permalink)
D-series PIMP
 
Demon_12-21-2012's Avatar
 
iTrader: (16)
Join Date: Feb 2010
Location: Ohio
Posts: 1,461
Rep Power: 12 Demon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow upDemon_12-21-2012 is about to blow up
iTrader Score: 16 reviews
Default

tweak is correct


You must spread some Reputation around before giving it to Tw34k again.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Demon_12-21-2012 is offline   Reply With Quote Quick reply to this message
Old 06-06-2011, 11:06 PM   #20 (permalink)
n00b
 
Civic 808's Avatar
 
iTrader: (0)
Join Date: Apr 2009
Posts: 10
Rep Power: 0 Civic 808 is nobody
iTrader Score: 0 reviews
Default

Don't forget to replace the capacitors for the ECU (, that will help with intermittent start
Civic 808 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the D-series.org forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


iconAll times are GMT -8. The time now is 09:55 AM. | Welcome to Forum, please register to access all of our features.