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Discussion Starter #1
I want to swap out my horribly long STD 4-speed for a DX or SI of the same year, 91. Will I need to obtain a DX or SI ecu as well to handle 5 gears? Sorry if this is a silly question, I'm just getting into all of this.
 

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Brokedick Millionaire
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nope, swap and go.

I'd go with the DX for now, the STD D15 would run out of breath on the highway with the Si tranny.

Plans for the old tranny?
 
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