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do i need a different ecu in my 91 si with a d15b?

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Old Dec 12, 2004 | 03:58 PM
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r1lorenzini's Avatar
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From: san carlos, ca, usa
Default do i need a different ecu in my 91 si with a d15b?

i have a 1991 honda civic si. i recently purchase a d15b. do i need a different ecu or will my stock ecu work?
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Old Dec 12, 2004 | 06:15 PM
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From: Maple Ridge, BC, Canada
Default Re: do i need a different ecu in my 91 si with a d15b? (r1lorenzini)

You should be fine with that ecu, there's not enough of a difference in engine size to make a big difference.
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Old Dec 12, 2004 | 06:55 PM
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From: Maple Valley, WA, USA
Default Re: do i need a different ecu in my 91 si with a d15b? (r1lorenzini)

I've done a few swaps like this for people just needing a fresher motor. Just reuse your current intake manifold and distributor and you should be fine. You will have to wire up the fan switch but other than that it is a direct bolt in.
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Old Dec 12, 2004 | 10:04 PM
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r1lorenzini's Avatar
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Default Re: do i need a different ecu in my 91 si with a d15b? (RedlinedVTEC)

what if the motor has a intake and distributor on it? what fan wire do i need to wire up?
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