Nextelbuddy

i am probably trading my car this weekend minus my turbo kit and hondata and need to leave the P72 ecu in teh car since it will retain the gsr motor.

how can put the p72 ecu that is currently chipped for hondata back to normal so it will run without the hondata and just run the motor on stock injectors and such?

thanx in advance

B18 CYA

take the chip out and cut the jumper by the chip...

Nextelbuddy

which jumper? got any pix?

PM-Performance

i think you might be better getting another ECU, last thing you wanna do is **** that up if your not used to working with boards

ladysman

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NextelBuddy &raquo;</TD></TR><TR><TD CLASS="quote">i am probably trading my car this weekend minus my turbo kit and hondata and need to leave the P72 ecu in teh car since it will retain the gsr motor.

how can put the p72 ecu that is currently chipped for hondata back to normal so it will run without the hondata and just run the motor on stock injectors and such?

thanx in advance</TD></TR></TABLE>

Cut jumper J1 and burn a stock map chip or whatever map you are running (larger injectors if you are giving them with the car.)

T-RO

yeah cutting jumper J1 will return the ECU to stock settings.

Nextelbuddy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by T-RO &raquo;</TD></TR><TR><TD CLASS="quote">yeah cutting jumper J1 will return the ECU to stock settings.</TD></TR></TABLE>

so it is just cut jumper J1? or is it cut the jumper and then burn a stock MAP chip.

i thuoght it was just remove the chip i have in there now and cut jumper J1 and teh ecu will return back to stock

PM-Performance

it will need a prom reguardless to do anything. so you will need an eprom in there with a program to run . Now cutting J1 allows you to not need the interface box then ?

tthame1

No, you only have to cut j1. After you cut j1, it goes back to the factory map. You do not need a rom in the socket, you can leave it blank as long as j1 is cut.

Jaker

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tthame1 &raquo;</TD></TR><TR><TD CLASS="quote">No, you only have to cut j1. After you cut j1, it goes back to the factory map. You do not need a rom in the socket, you can leave it blank as long as j1 is cut.</TD></TR></TABLE>

This is absolutely correct. Cutting J1 will make the ECU use the maps that are on the on-board memory in the stock processor. When you chip an ECU, you bypass this on-board memory by installing J1. By cutting J1, you are now "un-bypassing" the on-board maps. You could even leave the Hondata eprom in there if you wanted to.

hoggy

right, just cut J1 and its returned to stock, no need for a new chip

illi Adik

Im in the same boat, does anyone have any pics of this J1 jumper location?

hoggy

J1 is directly above the socket/chip.

dennis

J1 is in the top right section (the section that goes up). In a modded ECU it will have a wire jumper that just needs to be cut.

Dr Pooface

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jackson4Door &raquo;</TD></TR><TR><TD CLASS="quote">Im in the same boat, does anyone have any pics of this J1 jumper location?</TD></TR></TABLE>

A pretty big clue is that it says "J1" right next to it.

illi Adik

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dr Pooface &raquo;</TD></TR><TR><TD CLASS="quote">

A pretty big clue is that it says "J1" right next to it.</TD></TR></TABLE>

Ha, well alright...just never looked closely at the inside of the ECU.

Nihilation

*edit- nm*

ladysman

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tthame1 &raquo;</TD></TR><TR><TD CLASS="quote">No, you only have to cut j1. After you cut j1, it goes back to the factory map. You do not need a rom in the socket, you can leave it blank as long as j1 is cut.</TD></TR></TABLE>

Thanks for clarifying. I couldn't remember nor have I ever had to do this...yet.

cha chi

how about you sell me the socketed p72. i need one for my hondata s200!