Okay so my new REX has a LS swap on it, it's a 5 speed...but no correct ECU (running virgin p28-auto )I wanted to know what ECU I should use pr4 (ls obd01) or p28(92-95)????Not looking for power or anything at the time just correct ECU for it to run correctly and drive drive it then worry about power later-later on. So can I just plug pr4 and be good or get p28 and get it chipped? What would you guys suggest? TIA

 

How is the car wired?

Is it wired for obd 0 or obd 1?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ***$nyper &raquo;</TD></TR><TR><TD CLASS="quote">How is the car wired?

Is it wired for obd 0 or obd 1?</TD></TR></TABLE> yea what he said!!

 

if you want a plug and play, put the computer thats suppost to be with the engine. but since you only stated obd1 computers, im assuming you switched to obd1... so run the p74. i thought pr4 was obd0?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by oreopeete &raquo;</TD></TR><TR><TD CLASS="quote">if you want a plug and play, put the computer thats suppost to be with the engine. but since you only stated obd1 computers, im assuming you switched to obd1... so run the p74. i thought pr4 was obd0?</TD></TR></TABLE>PR4 came in both OBD0 and OBD1 - 90-91 = OBD0 - 92-93 = OBD1

 

REX is wired obd 1....so yeah like some one said I'm thinking I should run same ECU that's suppose to be with engine...but p74? which one's that? Yeah I was told that pr4 came in both obd 0 & 1....the motors from a 96 ls i believe so would that be obd 01 or would that something else? But call shop and they say to use p28 chipped so yeah...just want to know what's the easiest/cheapest (chipped p28 $300 )way plug and play to run motor correctly...LMK thanks

 

a 96 is obd 2... 92-95 is obd1

 

I would think so that the 96+ is odb 2 and yes someone did suggest me to use odb 1 from a 94-95 LS as well as p28 so just want to know like OP what's easier/cheaper ECU to run. Will check on year of engine but prev. onwer I thought I heard said 96 LS motor and is wired for odb 1. Thanks

 

get an obd1 pr4 and forget all about the p28 till you get vtec, non vtecers should not have vtec ecus... right?

 

I would have to agree only becasue if I get p28 that means more $$$ so should I just get pr4 obd 1???????Though later-later down the road I do want to go LS VTEC locally say virgine p28 going for $150-$180, $175 to get it chipped and $300 PREchipped...and pr4 obd 0 & 1 for $20-$80 bucks so pr4????plug and play and I'm good to go????LMK thanks