| Message: | | I think it has to do with parts being rare. BMW knows there aren't that many people who would ever need an s38 rebuild, and because of that there aren't really alternatives, so they charge a little more...
I don't believe performance is that different either. My last dyno run with a JC chip had 235 to the wheels. So you're down 30 hp, but you're up (down) 200 lbs. As far as tires, you've got an extra 10mm all around, but the 200 lbs more than offsets it.
That said, I've never ridden in an e34 m5, so I don't know how the ride (road noise, harshness) compares.
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