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Old 09-07-2011, 09:03 PM
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need some info

Does anyone know a good plug and play computer for my 89 si
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Old 09-08-2011, 05:01 PM
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Re: need some info

Sure, grab an ecu from an 88 Si or a 90/91 2.0Si.

Sorry, but there are no plug and play computer goodies for 3rd gens. At least not that I've ever heard about. And I've owned 3rd gens for years.
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Old 09-08-2011, 07:09 PM
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Re: need some info

Why would you want one
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Old 09-08-2011, 10:50 PM
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Re: need some info

Just to tune it in to bolt on power adders
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Old 09-08-2011, 10:59 PM
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Re: need some info

You can't tune your 89 Si. Sorry.
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Old 09-08-2011, 11:07 PM
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Re: need some info

Ok thanks so putting a bigger throttle body and injectors would be pointless
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Old 09-09-2011, 12:02 AM
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Re: need some info

Not pointless if you convert to OBD1 and use a different ECU. I'm not very knowledgeable on tuning, but I have read that there are conversion harness available. Then you can use a different Honda OBD1 ECU and it's possible to tune then.

Click on this link for some information on 3rd gen upgrades...
http://www.preludepower.com/forums/s...d.php?t=257172
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Last edited by luzer; 09-09-2011 at 12:04 AM.
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Old 09-09-2011, 01:31 AM
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Re: need some info

pm6 ecu is for 88-91 civic si/ex
some of those obd0 ecu you can chip with old school tuning software like turboedit and ghettodyn, zdyn.


You could also get a pr4 ecu just makes sure it's obd0. that will work fine. the maps use the same size injectors but higher rev limit and also will run richer... if your car is mainly stock, i doubt changing ecu will give you any gains.

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