I am buying a 99 GSX and I was wondering where the computer is located on the car. I cant find it under the hood and I am thinking that it is behind the radio or glovebox but wanted to know before i started taking things apart. I have searched the forum and couldnt find anything. Any help is appreciated. I am new to the import scene(always had musclecars) so I am probably gonna be asking a lot of questions, just to be warned.

 

Behind the glove box

 

Unless the ECU was moved behind the glovebox for some reason in latter year cars, the ECU is usually found behind the radio on the transmission hump.
The a/c, heater blower is behind the glovebox and on the floorboard is the ABS/ECU (just below the blower).