Well, here is an update after over a year of smooth running with no issues. Some may remember the thread about the multi pin connectors on the L28ET fuel spark computers. Many people have posted about problems with misses and running rich and bogging under load...etc. Well I was out for a usual ride in my Z today and it was running great as it has been for over a year. About a year and a half ago after wrestling with the ECU connectors every two weeks I decided to use some dielectric grease on the AFM and ECU plugs. It worked great for all this time until now. All of a sudden, under load, anything past 1/2 throttle either the ignition or fuel was cutting out completely. I thought maybe my fuel pump was gone or maybe I was out of fuel. Luckily I was about 1/4 mile from where my parents live so I diverted towards their house. As I drove, the problem got worse and worse, I had to milk the gas pedal to get the car into their driveway. When I stopped in their driveway, it stalled. I cranked it over and it would NOT fire up at all. I pulled the coil wire and had my brother who happened to show up, hold the wire to a strut bolt while I cranked. No spark at all. I had fuel pressure, I had fuel pump, I had fuel, the relays for all the systems were clicking on and off. I disconnected/reconnected the AFM plug. That made no difference. I pulled the ECU off the kick panel and disconnected/reconnected all the multi-pin plugs. Cranked it over and it fired right up. Problem solved.
I'll say it again. 9 out of 10 problems with running conditions on the L28ET electronics are caused by those D#$& connectors.