used it on my 91 thirdgen. paid $240

$175 shipped and i will include the extra cable/adapter for thirdgens.

you can look up the new pricing here. that's over $150 off.

http://www.ttspowersystems.com/DM_pricing.htm

and a quick description of what it is and does when you pay for it.

http://www.ttspowersystems.com/diagnostic.htm