difference between these ecu's?

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Jul 25, 2003 | 01:28 PM

pinoyboy204

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From: Winnipeg, Manitoba, Canada

difference between these ecu's?

whats the difference between using the PM5 and the PM9 ecu? what is better for my car?

Jul 25, 2003 | 06:23 PM

blah13

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Re: difference between these ecu's? (pinoyboy204)

The first question is, what is your car?

Jul 25, 2003 | 07:25 PM

pinoyboy204

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Re: difference between these ecu's? (blah13)

i have a 90 civic std. or known as the cx in canada.

Jul 25, 2003 | 07:37 PM

Hondasaurs

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Re: difference between these ecu's? (pinoyboy204)

One ECU is MPFI the other is DPFI.

If you have an STD then you need to use the PM5 (DPFI). The Si is the PM5 (MPFI).

Jul 25, 2003 | 09:56 PM

pinoyboy204

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Re: difference between these ecu's? (Hondasaurs)

huh?

Jul 25, 2003 | 10:07 PM

FourthGenHatch

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Re: difference between these ecu's?

No both of those ECUs are DPFI. PM5 was found in most DX and STDs (and LX to). PM9 was found in some 91 DPFI cars. I think the 9 had even crappier fuel maps than the 5. You could swap in an ECU from the 5, but I highly doubt you will notice any gains.

Jul 25, 2003 | 10:08 PM

FourthGenHatch

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Re: difference between these ecu's? (Hondasaurs)

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Jul 25, 2003 | 10:15 PM

pinoyboy204

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Re: difference between these ecu's? (FourthGenHatch)

..ok

Jul 26, 2003 | 04:11 AM

Hondasaurs

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Re: difference between these ecu's? (FourthGenHatch)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hondasaurs »</TD></TR><TR><TD CLASS="quote">If you have an STD then you need to use the PM5 (DPFI). The Si is the PM5 (MPFI).</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FourthGenHatch »</TD></TR><TR><TD CLASS="quote">

The Si ECU is a PM6.</TD></TR></TABLE>

My bad...typo.