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CFI Prom swap or ECM??

Old Sep 26, 2010 | 03:15 PM
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CFI Prom swap or ECM??

I have a 82 trans am with crossfire injection. it has an auto tranny and i want to swap in a manual. ive heard of some problems with doing the swap in regards to the ECM so i was thinking of getting a prom for a manual tranny, or changing the ECM to a newer version from a TBI vehicle with manual tranny. anyone have any input on what the better route would be? and what would be more expensive? i have no idea where to get a new Prom at so im in the dark about it.
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Old Sep 27, 2010 | 03:57 PM
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Re: CFI Prom swap or ECM??

CF harness is specific to CF. Later ECU's wont plug in. You would need to repin. Most likely you will need to do a prom swap. If you cant find a stock manual trans prom then Hypertech may offer one.
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Old Sep 27, 2010 | 04:17 PM
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Re: CFI Prom swap or ECM??

yes i know i will need to repin if i swap ECU. i have an oppertunity to get one from a 91 rs with 305 TBI and manual tranny, will this work? and i think hypertech only has a NON-smog legal chip. i need to pass CA emissions, i know it sucks
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Old Sep 27, 2010 | 04:51 PM
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Re: CFI Prom swap or ECM??

I have a 82 trans am with crossfire injection.
305 in both cars. 8746 needs a IAT or turn off in tune. Should be OK. Cant think of any other differences. I presume injector size is same. Digital dash may be an issue if present.
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