I've been looking into turbo charging the KA. I just have a few questions for those with know how on how to put this thing in. Where do I locate the O2 sensor at. Do I put it into the manifold, or do I put it in the downpipe. On the 1993, does the chip that comes with the turbo kit just clip into my car's now, or do I have to get the whole ECU reprogrammed, that this new chip saudered onto the board?