1sikhatch

ok i need some advise on this, i recently swapped a jdm d15b into my si. now i need the right ecu for this motor. should i get a obd0-obd1 jumper and use a obd1 ecu or can i use a obd0 b16 ecu?

GreenBean

I am subscribing...I would think the cheaper option would be a JDM P27 ECU right? The SOHC VTEC...I think they are OBD0, but you wouldn't go wrong with a P28 OBD1 ECU, but might cost more to change overe to OBD1.

I wanna know this also,
If you are tuning, is it better on an OBD0 or an OBD1 ECU. Any differences...

makoto

I would think P28 (which of course is obd1). The Jdm d15b is a "three stage" vtec (for fuel economy), so the p28 isn't the exact ecu for the motor, but I would assume it would work. Maybe not...

beatthisspeed69

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by makoto &raquo;</TD></TR><TR><TD CLASS="quote">I would think P28 (which of course is obd1). The Jdm d15b is a "three stage" vtec (for fuel economy), so the p28 isn't the exact ecu for the motor, but I would assume it would work. Maybe not...</TD></TR></TABLE>

not all d15b's are stage 3 vtec if it has 2 vtec silanoids however you spell that then yes it is???

ludesrv

OBD0 ecus don't have vtec other then the PR3 and PW0 (B16A ecus).

You want a P28, OBD1. I started making swap harnesses for them. PM me if you want to buy one. They are cheaper then Rywire.

Ass$nyper

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ludesrv &raquo;</TD></TR><TR><TD CLASS="quote">OBD0 ecus don't have vtec other then the PR3 and PW0 (B16A ecus).

You want a P28, OBD1. I started making swap harnesses for them. PM me if you want to buy one. They are cheaper then Rywire.</TD></TR></TABLE> Other then you being a canuk I'd trust you

I'm sure you do great work
Always good to see more people doing stuff for these old cars

Your info is correct you do want a p28 or you can run a p08.

GreenBean

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GreenBean &raquo;</TD></TR><TR><TD CLASS="quote"> I wanna know this also,
If you are tuning, is it better on an OBD0 or an OBD1 ECU. Any differences... </TD></TR></TABLE>


Any takers...

c0d0r

of all the shops that ive been too getting other's cars tuned obd1 is the better platform, the p28 is a very good ecu to tune with

Crx Jimmy

if you want to stay obd0 you can use a ps9 and chip it with turboedit for vtec use

STREETWERKZ

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ludesrv &raquo;</TD></TR><TR><TD CLASS="quote"> They are cheaper then Rywire.</TD></TR></TABLE>


peace of mind is worth the little extra cost.

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


Any takers... </TD></TR></TABLE>


obd-1 computer's use a more powerful processor. resulting in a better, more thorough tune.

1sikhatch

so my best option would be to get a p28 and jumper, is that all i would need?

Rease3

i agree thats what im doing also with the dpfi obd0-1 conversino harness from j-k-tuning.com

northemt88

the only thing that i know is a p28 will work, maybe a p30, p72

Rease3

i have a chipped p28 for sale