ECU eprom upgrades from stock to whatever injectors Nistune Dealer in Plano, TX Upgrades go out the same day ordered and shipped UPSP priority mail $60
300zx ECU socketing $50 in and out the same day or it's free
Nistune Real Time Tuning for Z31, Z32, S13, S14, Skyline One of the Oldest Nistune Dealers in the US