Can a pr3 ecu be chipped like a p28??

 

yes

 

what are the actual specs on pr3............like revlimit and are diffrent variants of pr3? sorry dint mean to threadjack!?!?!?

 

It's not chipped just like a P28, since it's OBD0 (mostly) you just replace the rom with a socket, no parts to add.

The PR3 has an 8000rpm rev limiter and 6565 vtec point. As far as I know, the JDM and EDM variants have the same specs. Anyone confirm?

 

8000k rpm? 6565 vtec engagement.........kinda high i thought it was maybe 45 or 4700

 

Well there's 2 equations to get the vtec point from the ecu code, and the one Crome uses yields 6565, while BRE says 4700ish. It's been so long since I've driven a stock PR3, I don't know what it is anymore...

 

does anyone know for shure?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18_crx &raquo;</TD></TR><TR><TD CLASS="quote">does anyone know for shure?</TD></TR></TABLE>

dude
u can chip it
well all u do is change the eprom
its not like a obd1 ecu that u have to add chips and mod it

anyhow
go to pgmfi.org

 

my JDM ODB0 PR3 vtec was at ~4700 stock.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18_crx &raquo;</TD></TR><TR><TD CLASS="quote">what are the actual specs on oem pr3............like revlimit and are diffrent variants of pr3? sorry dint mean to threadjack!?!?!?</TD></TR></TABLE>


i dont wanna chip it. just need specs

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18_crx &raquo;</TD></TR><TR><TD CLASS="quote">


i dont wanna chip it. just need specs</TD></TR></TABLE>

ANYONE?

 

you can definitely chip it. for dirt cheap too. i have three different chips
for my pr3. all i do is take the ecu cover off pop one out and pop the new one in.
as for the stock vtec point i thought it was somewhere around 5200 or so.
if you chip it that might change though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kelchyn &raquo;</TD></TR><TR><TD CLASS="quote">my JDM ODB0 PR3 vtec was at ~4700 stock.</TD></TR></TABLE>
me too just that my vtec kicks in at 4600 unless my tach is off a lil. as for red line i hear its 8000 and others say its 8200 all i know is that i dont try to hit the 8000 i usually shift a little before

 

Crome uses OBD1 formula for obd0 vtec. The clock speed in the obd0 vtec ecus is different and thus the formula is different also. BRE is correct.

Ben

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ben Ogle &raquo;</TD></TR><TR><TD CLASS="quote">Crome uses OBD1 formula for obd0 vtec. The clock speed in the obd0 vtec ecus is different and thus the formula is different also. BRE is correct.</TD></TR></TABLE>

This explains the discrepancy in VTEC points between BRE and Crome. I wondered which was correct, thanks.

 

Does anyone know wat Software can be used to program the chip for a OBD0 PR3 ecu?

 

We tried Bre and Turboedit and changed the settings but it was the same when we tested it out.