Performance chip?

[KenZ8]

This is the first performance chip that I've seen for the Z8. Does anyone have any experience with these?
http://http://cgi.ebay.com/ebaymotors/PERFORMANCE-CHIP-BMW-Z8-2000-2003-2002-2001-NEW-NIB_W0QQitemZ270192249451QQcmdZViewItem?hash=item270192249451 (http://cgi.ebay.com/ebaymotors/PERFORMANCE-CHIP-BMW-Z8-2000-2003-2002-2001-NEW-NIB_W0QQitemZ270192249451QQcmdZViewItem?hash=item270192249451)

[thegunguy]

Run away! Run away!

[KenZ8]

But it says that I can run the car on apple juice instead of hi-test! And there's no carbon buildup from apple juice.

[Rev Happy]

I wouldn't trust performance chips. Especially if they come from E-bay for less than $10. Just my .02.