pm5 replace a pm9?

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Apr 30, 2003 | 08:23 PM

91 civic

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Joined: Nov 2002

Posts: 49

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From: Olympia, WA, USA

pm5 replace a pm9?

I have a D15B1 running on a pm9 ecu, and was wondering if switching in a pm5 ecu will improve overall horse power?
Thanks for the help

Apr 30, 2003 | 09:06 PM

markw

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Joined: Apr 2003

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From: sd, ca, usa

Re: pm5 replace a pm9? (91 civic)

PM5 is a DPFI ecu. Not sure on the PM9, is yours a dpfi engine? It probably won't gain you anything.

Apr 30, 2003 | 10:56 PM

Urban Business

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Re: pm5 replace a pm9? (markw)

pm9 is an alternative to the pm5. you wont see **** in difference. somewhere (late 91) honda mde the pm9. everyone ive seen has a 91 stamp on it whcih is weird b/c the year of the ecu usually corresponds to the next year car, ie a 89 would be in a 90, 90 ina 91 etc.