ECU bypass question

Hey I was wondering on a 1g DSM Eclipse (i.e. 1992 Eclipse w/ 1.8L Manual Tranny SOHC N/T) how would you bypass the computer (ECU) to start up a car? My friend who's selling me his 92 Eclipse said that since the ECU was bad, the mobile mechanic (That's what we call them out here in Vegas, their actual name is "Car Doctor") performed this bypass with something in the relay? Can anyone elaborate?

Reason being is I am set to see this car tomorrow night after work, and I want to be able to at least start it so I can get an idea if I want it or not. I have my manual so if you give me some tips on where to look in there, or can further elaborate, that'd be wonderful. (I am still going to get an ECU for it, but like I said, I want to be able to start it tomorrow and get a feel for it).

Thanks again!

A little update, a friend told me that my 1990 Eclipse GS, the ECU inside it will be compatible with the 1992 Eclipse, even though one is an automatic w/ OD, and the 1992 is a 5-speed manual. That's why I posted the poll, and wanted to get some feedback on that. Thanks in advance to anyone who responds.