unknown0001

Hey guys I'm trying to figure out if there is a difference between the PR4 ECU from a 92-93 integra and a P75 from a 94+ integra.

Now I know the b18a has 130hp listed...while the b18b has 142hp. From what I read and understood, the HP gains are from the head/camshaft and the intake manifold.

Is there a difference in fuel timing/maps between the PR4 and P75 to accomidate the extra HP reading? is the redline the same?

I know that the horsepower is produced from the engine itself by changing a few settings on the cam profiles and possibly intake manifold, but is there a difference between the two ecu's?


reason for my question is I have a b18b motor and I have a PR4 sitting right next to me...and I'm just wondering if there would be any negative effects from runnig the ECU and lossing a small percentage of power?

Circuit Star-29

Maps are exactly the same...

unknown0001

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Circuit Star-29 &raquo;</TD></TR><TR><TD CLASS="quote">Maps are exactly the same... </TD></TR></TABLE>

thank you that's what I wanted to know

iH8RICERZ

iTrader: (1)

an no negative effects in running either ecu on your motor, especially if its stock/have bolt ons.

projectTeG

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Circuit Star-29 &raquo;</TD></TR><TR><TD CLASS="quote">Maps are exactly the same... </TD></TR></TABLE>

i wanting to say there are slight differences between them.

92DAIntegraXSI

there is cuz im runing a p75 in my 92 gs the rev limiter is 7200 and a lil more fuel is dumped i had it lying around to do my auto to 5 speed so thats why im using it but yea its a lil diff

unknown0001

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92DAIntegraXSI &raquo;</TD></TR><TR><TD CLASS="quote">there is cuz im runing a p75 in my 92 gs the rev limiter is 7200 and a lil more fuel is dumped i had it lying around to do my auto to 5 speed so thats why im using it but yea its a lil diff</TD></TR></TABLE>


do you want to trade ? I got the PR4 untouched from a 92 teg 5-spd

92DAIntegraXSI

nahh im good just use it the car will run a little rich thats all with a fuel pressure regulator and a gauge adj it to 36-42 psi and your good to go it wont hurt nething just dont go over 6500rpms cuz ls's were not ment to rev that high on stock valvetrain

Circuit Star-29

There is no difference. Looking at the maps right now.

blueb20vda9

hey i’m 18 years late but do you still have that pr4 ecu lol