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Old 04-04-2014, 12:08 AM   #6
madpogue
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Join Date: Sep 2004
Location: Madison, WI USA
Posts: 25,713
 

1996 SW2
Default Re: SOHC to DOHC swap

Wiring harness will be the same. Since your car was born with a DOHC, does it presently have the DOHC cluster? Does it have an MP3 transmission?

There's only one "computer". The PCM from the donor car will technically run the engine in your car, but without a transmission to communicate with, it will set a perpetual SES light. You need a DOHC manual PCM. Did you buy your car with the SOHC engine or did you swap it yourself? If you swapped it, would you still have the original PCM? That one would work.

As to which transmission to use, the REAL question is whether you want to DRIVE an automatic or manual. The experience is COMPLETELY different, and that's what drives (no pun intended) the decision. If you choose to swap to the automatic, there's a lot more you need - brake pedal, shifter and cable, you'd def. want the donor PCM in that case. The wiring IS different between manual and automatic.

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