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ecm 1228838 vs 1228746

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Old 08-18-2018, 01:35 PM
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ecm 1228838 vs 1228746
I know the 8838 was used for 89 TPI and the 8746 was for the 92 TBI camaros. If I'm swapping from TBI to TPI do I need to swap ecms and if I do what all else may be envolved?
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Old 08-18-2018, 02:50 PM
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Re: ecm 1228838 vs 1228746
if you're going to 90-92 TPI, you'll need a 1227730 ecm.
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Old 08-18-2018, 02:56 PM
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Re: ecm 1228838 vs 1228746
I have a spare 7730 from my old camaro I had. I was just thinking the 8838 would be an easier swap. I'll have to dig into it a little more then.
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Old 08-18-2018, 04:52 PM
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Re: ecm 1228838 vs 1228746
depends if you're after a MAP or MAF system. 7730 is the MAP system.
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Old 08-18-2018, 04:56 PM
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Re: ecm 1228838 vs 1228746
My 92 TBI is MAP.
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Old 08-18-2018, 06:19 PM
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Re: ecm 1228838 vs 1228746
I think you can re-pin the TBI harness to the 7730. Do a search as I think it's been done numerous times before.
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Old 08-18-2018, 07:04 PM
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Re: ecm 1228838 vs 1228746
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Old 08-19-2018, 09:31 AM
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Re: ecm 1228838 vs 1228746
The '8838 ECM is used in 3.1l TBI mini-vans and trucks.

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