Difference between pm5 and pm9
 

Hey whats the difference between the two of them pm5 and pm9 computer.I have a pm5 on mine but can I use a pm9.
89 honda civic dx hatchbwck w 5 speed tranny.
Thanks

Re: Difference between pm5 and pm9 (Big red89)
 

ru shur its not pm8 or ps9

This is what I have in my civic right now37820-PM5-A080
This is what I want to put in.
378020-PM9-A01.
Will it work and whats the difference?

Sorry its a 1.5

Re: (Big red89)
 

PM5 is for the 92hp D15B2 DX DPFI engine
PM9 is for the 70hp D15B1 STD DPFI engine

PM9 probably has different fuel and ignition maps to run the lower hp engine correctly - yes it would work in the DX

Would I loose power with this computer. Or would this give me better fuel mileage?

anyone know

Re: (Big red89)
 

Leave it alone

Honda put the ECU with that Motor in your car for a reason

Re: (Johnny-Red)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Johnny-Red &raquo;</TD></TR><TR><TD CLASS="quote">Leave it alone

Honda put the ECU with that Motor in your car for a reason</TD></TR></TABLE>

https://honda-tech.com/forums/images/smilies/emthup.gif

Honda didnt intend for anyone to put vtec motors into these years either but people usually do. I am not asking if I want to leave it alone I am asking if it would work.Just wanted to know thats all.

Re: (Big red89)
 

Why don't you go on ebay and buy a +20 hp chip and you'll be doing almost better then changing the ECU.

Leave the goddamn car alone or sell it if you cant figure this ECU debate on your own.

Re: (Big red89)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Big red89 &raquo;</TD></TR><TR><TD CLASS="quote">Honda didnt intend for anyone to put vtec motors into these years either but people usually do. I am not asking if I want to leave it alone I am asking if it would work.Just wanted to know thats all.</TD></TR></TABLE>

yes it will work... how will it run? most likely like crap...

the fuel map will be different so you might have rich or lean spots in certain rpms...

Go ***K off pea brain!!! This is what I am trying to figure out. If I want to spend money on my car then let me do it.Just because you dont have a job and cant do any upgrades on your car that doent mean I cant do it. If you have nothing good to say then dont answer it at all.

Thanks I heart My EF Sedan, thats the answer I was looking for. Appreciated bro..

Re: (Big red89)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Big red89 &raquo;</TD></TR><TR><TD CLASS="quote">Go ***K off pea brain!!! This is what I am trying to figure out. If I want to spend money on my car then let me do it.Just because you dont have a job and cant do any upgrades on your car that doent mean I cant do it. If you have nothing good to say then dont answer it at all.</TD></TR></TABLE>


Hahaha where does having a job come into this? I just dont do mods that decrease my cars potential like you seem to be doing.

Re: (Johnny-Red)
 

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

yes it will work... how will it run? most likely like crap...

the fuel map will be different so you might have rich or lean spots in certain rpms...</TD></TR></TABLE>

exactily... and yea people do put Vtec motors in these cars... but people also put the matching Vtec ECU in as well... you obviously are having a hard time figuring out this concept https://honda-tech.com/forums/images...s/emhammer.gif leave your ecu... you wont see better HP or fuel milage...