Difference between pm5 and pm9 - Honda-Tech


Difference between pm5 and pm9

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Old 04-17-2008, 07:29 PM   #1
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Default 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.
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Old 04-17-2008, 07:50 PM   #2
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Default Re: Difference between pm5 and pm9 (Big red89)

ru shur its not pm8 or ps9
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Old 04-17-2008, 08:08 PM   #3
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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?
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Old 04-17-2008, 08:10 PM   #4
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Sorry its a 1.5
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Old 04-18-2008, 10:47 AM   #5
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Default 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
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Old 04-18-2008, 04:19 PM   #6
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Would I loose power with this computer. Or would this give me better fuel mileage?
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Old 04-18-2008, 05:14 PM   #7
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anyone know
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Old 04-18-2008, 05:40 PM   #8
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Leave it alone

Honda put the ECU with that Motor in your car for a reason
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Old 04-18-2008, 05:59 PM   #9
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Originally Posted by Johnny-Red
Leave it alone

Honda put the ECU with that Motor in your car for a reason
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Old 04-18-2008, 06:26 PM   #10
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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.
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Old 04-18-2008, 06:31 PM   #11
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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.

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Old 04-18-2008, 06:34 PM   #12
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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.
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...
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Old 04-18-2008, 06:40 PM   #13
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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.
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Old 04-18-2008, 06:43 PM   #14
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Thanks I heart My EF Sedan, thats the answer I was looking for. Appreciated bro..
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Old 04-18-2008, 08:57 PM   #15
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Quote:
Originally Posted by Big red89
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.

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.
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Old 04-18-2008, 09:06 PM   #16
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Quote:
Originally Posted by I heart My EF Sedan

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...
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 leave your ecu... you wont see better HP or fuel milage...
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