yep garage19 is the man with megatune . yes buy a wideband but the lc1 aint the best ive had loads of reliability prob with them went through 4 in a month at one stage jim galley has has sinlar probs to .

try this

http://www.zeitronix.com/Products/zt2/zt2.htm

heres the english supplier

http://www.performance5.com/enginemanagement_tools.asp