Here's the deal. I'm not sure what maxima this ecu came out of but A18-G72 E5W is the code. This ecu has been running my car for about 6 months. the only change yoiu need to make it switch pin 44/48 with 46/47 and maybe wiring your fuel pump. My fuel pump was modified so I'm not sure if it's needed or not. The will have codes for evap and egr but will drive. The car will also idle high randomly sometimes.

Just wanted to share since it doesn't seem to be any info for 99 cars.

 

are you asking what model year this ECU is for based on the code #?

if so, that's a '98 ECU.

1998 Engine Computer Nissan Maxima 250.00 USD A18-G72 E5W, MATCH Silvers Auto Parts USA-ME(Orono) 1-888-666-2124