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94 vs 95 ECU

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Old 05-29-14, 09:16 PM   #1
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Question 94 vs 95 ECU

Ok so some of you peeps are telling me the ECU might be bad on my 94 instead of the cats, my 95 has a funky ECU but the car is still drivable. Is it possible to pull the ECU from my 95 and plug it into the 94 just to test it and then put it back? I know one is a ucf10 and the other is a 20, but the cars are only a year apart and they both have the same engine. Can I get away with this without frying something?
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Old 05-29-14, 09:31 PM   #2
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I dont think the 94 is compatible with the 95 ecu. Lexus did alot of up dates to the 95 model.
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Old 05-29-14, 10:12 PM   #3
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They are not even close, although Yamae will have the last word on that one.
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Old 05-29-14, 11:20 PM   #4
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no, complete generational difference. will not wok.

will need a '93-94 ecu for your '94.
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Old 05-30-14, 04:15 AM   #5
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Figures.. I knew it wouldn't be that easy lol
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Old 05-30-14, 07:35 AM   #6
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Of course you did but it was worth a shot right.
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Old 05-31-14, 03:07 PM   #7
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One difference i know off the top of my head is the 95+ models use the "heated wire" type of AFM, and the 94 down models use the old fashioned "air vane" potentiometer sensor instead.
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