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View Full Version : Big Question for Rb25 wiring for s13


kwin507
07-21-2009, 10:57 PM
Okay I have a Rb25 series 2 complete swap with uncut harness

i know i need to extend the o2 and maf

but my main question is do i need to do anything to the harness since i did have a rb20 swap in before ?

reason im asking is because when i bought the motor from Japanese Engine Imports they told me i wouldnt need to mess with the wiring due to my old setup with the rb20.

thanks for any info