my friend has a pr4 ecu that suppose to has come out a of a 90 integra ls. which is suppose to have a 7200rpm rev limiter, but this ecu is stopping at 6800rpm. so now we are wondering what it really came out of . any one know what a pr4 ecu powered orginally?

thanks

 

It is out of a 90 LS. Redline is at 6,800. The 7,200 rev limit was for the 94 plus LS's.

 

thank u .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kwuaymaikrup &raquo;</TD></TR><TR><TD CLASS="quote">It is out of a 90 LS. Redline is at 6,800. The 7,200 rev limit was for the 94 plus LS's.</TD></TR></TABLE>

No Choco Taco for you!

There were two PR4, one was '90-91 OBD0 and the other was '92-93 OBD1. '94 saw the P74, and '95 saw the P75.

As far as revlimits... the .bins are public domain at pgmfi.org, download them and see for yourself.

 

i have a pr4 for sale. thanks for the info btw.

 

Are the pinouts on the pr4 the same as the pm6? I just bought a chipped pr4 and am wondering if I'll have to move pins around