i got 3speed automatic transmission(a131l maybe), can i relace it with 4speed(u240e maybe)

2002 TOYOTA COROLLA
160,000 MILES
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FIRSTHD
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i understand there is some electrical wiring modifications, will computer operation be affected much, will it be worth it
thanks for any help
firsthd
Nov 21, 2011 at 6:05 AM
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RIVERMIKERAT
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You might need to have the computer reprogrammed for shift points.
Nov 21, 2011 at 6:07 AM