165 vs 730

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Jul 28, 2004 | 10:38 PM

88Z

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Joined: Dec 2003

Posts: 170

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From: Atascadero, CA

Car: 88 Iroc

165 vs 730

If a harness was meant for a 165 ECM, will it still plug into a 730 ECM alright?

Jul 28, 2004 | 11:06 PM

Dave_Jones

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Joined: Nov 2003

Posts: 462

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From: Ft. Leavenworth, KS

Car: 83 TA, 89 TTA, others

Engine: ZZ4 TPI, LC2 turbo v6

Transmission: several, mostly broken

Re: 165 vs 730

Quote:

Originally posted by 88Z
If a harness was meant for a 165 ECM, will it still plug into a 730 ECM alright?

You have to do a bit of repinning as far as the ECM connectors go, and there's about four wires worth of difference for the MAP and KS inputs. It's not hard at all to make the changes.

Jul 29, 2004 | 09:25 PM

Grumpy

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Joined: Jun 2000

Posts: 7,554

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From: In reality

Car: An Ol Buick

Engine: Vsick

Transmission: Janis Tranny Yank Converter

Re: 165 vs 730

Quote:

Originally posted by 88Z
If a harness was meant for a 165 ECM, will it still plug into a 730 ECM alright?

The 165 uses 2 ecm connectors, and the 730 has 3.
You need to add a connector, and do some repinning, and rewiring. A search at the DIY and using the word Davis should lead you to a link about how to do it.