AzntaggeR

so finally i got my p28 that this guy sent me and it finally arrived after 2 MONTHS!!. well the inside looked kinda iffy. theres no chip in it first of all and another thing i noticed is isn't there suppose to be a J1 connector or something?





tell me what you guys think.

mattEG

You are missing two caps, a resistor and a jumper.

J1 - Jumper

R54 - resistor

and c52,c5 should have caps.

correct me if i'm wrong but I think thats it.

Slammd Sol

You're missing two 0.1uF ceramic disc capacitors at C51 and C52, a 1.1K ohm resistor at R54, and the jumper connection at J1. Easy and cheap parts you can get from Radio shack.

How a finished ECU will look:

AzntaggeR

can anyone with basic soldering skills solder that in? if so, i can get my friend to do it for me.

Slammd Sol

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AzntaggeR &raquo;</TD></TR><TR><TD CLASS="quote">can anyone with basic soldering skills solder that in? if so, i can get my friend to do it for me.</TD></TR></TABLE>

yes, its very easy. Get some desoldering braid to remove the solder from those holes mentioned above, install parts, and add some solder to their joints.

splitime

Yah, if someone is decent a soldering... its cake to put in.

Tell us who did that... so we can avoid having them touch an ecu and not finish a chip job after 2 months....

BlueShadow

Looks like whoever worked on it just added the DIP socket and the 74HC373 chip.

Since there is no jumper at J1 you can use this ECU and it will run off of the stock P28 program. To be able to read a chip that you put in the DIP socket you have to put a jumper wire at J1. You also need to put a 1K resistor at R54. The two 0.1uF ceramic capacitors at C5 and C52 are not absolutely necessary, but they are highly recommended. They help to filter out noise or keep the ECU from burning out, I forget which one.

http://home.mn.rr.com/keebler6....html

If you go to Moates.net and get the UBER1 kit you can get a ZIF socket and stack it on top of your DIP to make swapping chips easier. The kit also has the 2 ceramic capacitors, 1K resistor, and some jumper wire you can use. The AT29C256 chip will be used for burning your programs to. The extra 74HC373 and DIP socket will be extra. If you dont wanna buy the stuff from Moates you can visit your local radioshack and try finding this stuff there. But you wont find the chip, or ZIF at radioshack. If you cant solder, just visit one of your local electronics store and have them solder that stuff in.

http://www.moates.net/product_...id=42

AzntaggeR

i don't know who rechipped it, but i bought it off this guy that is under a lot of heat for scamming a few other users on HT apparently. i wasn't even expecting the ecu anymore, but it arrived surprisingly.

i also have another rechipped p28 arriving rechipped courtesy of projekteg from HMT.

i'll probably end up selling this one after solder in in the necessary jumpers, capicators, and resistors. thanks for the help.

093turbo16

iTrader: (2)

yea check the back out to see how the soldering looks. If he forgot those basic components, 10 to 1 the soldering isn't good either.

AzntaggeR

just popped the back off and some spots looks a bit sloppy, but doesn't appear to be bad enough to where it could be bad.

093turbo16

iTrader: (2)

get some pics of it.

BlackCRX

all you need is the resistor and the jumper

the caps are just extra noise filters, alot of hondata ecu;s dont even have the caps

Tactic$

Bought mine from Projekteg Soldering was good, and all the parts were there