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?

 

Maps are exactly the same...

 

<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

 

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

 

<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.

 

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

 

<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

 

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

 

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

 

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